ボート 天気予報
地球上のあらゆるスポットに対応したリアルタイムのボート天気予報。風・波・海面の状況を、これからの数日間にわたって GO・CAUTION・NO-GO で評価し、リアルタイムの海面水温マップ上に表示します。出航前に、ひと目で状況を把握。
地球上のあらゆるスポットに対応した AI 海洋気象予報
この4つのスポットは、ほんのライブプレビューにすぎません。無料の SeaLegs AI アプリなら、ご自身の出航地点や釣りのポイント、係留地にピンを立てるだけで、同じわかりやすい GO / CAUTION / NO-GO のボート天気予報を、地球上のどこでも入手できます。
📍 近くの海洋気象予報を入手 →または直接ダウンロード：
ボート天気予報とは？
ボート天気予報とは、水上での一日を実際に左右する条件を中心にまとめた海洋気象予報です。すなわち、風速と風向、波高と周期、そして全体的な海況です。陸上の天気予報と違い、雨が降るかどうかではなく、あなたの船にとって水上が安全で快適かどうかを伝えます。
難しいのは、それを読み解くことです。ノット、有義波高、秒単位のうねりの周期といった生の海洋データを解釈するには経験が要ります。SeaLegs AI がその解釈を代わりに行い、数値をスポットごと・日ごとの一つの正直な評価へと変換します。
注目のボートスポット
上のカードは、これら注目スポットそれぞれのリアルタイムなボート天気予報を表示しており、新しい海洋モデルデータが届くたびに更新されます。ご自身の出航地点や釣りのポイントでも同じ予報がほしいですか？ SeaLegs AI アプリで無料で追加できます。
Hudson Canyon Boating Forecast
Live GO / CAUTION / NO-GO conditions for Hudson Canyon — the largest submarine canyon on the U.S. East Coast, roughly 70–100 nautical miles offshore of New York Harbor and a premier run for tuna, marlin, and mahi. A long offshore run where wind against current and swell period decide the day.
📋 Latest outlook: Caution Thu-Fri; clean GO Saturday
Caution all day Thursday due to a confused cross-sea with SSE swell crossing WNW wind-waves. Seas peak at 4.5 feet at 6-second periods — awkward, uncomfortable motion most of the day. Brief good windows exist 4:00 AM–6:00 AM and after 9:00 PM.
Friday starts with a brief confused cross-sea (SSE swell crossing NNE wind-waves) through about 4:00 AM, then clears to clean conditions all day. Winds stay light at 5-10 knots westerly; seas ease to 3.4 feet at 7-second periods from the SSE. Depart 6:00 AM or later for the best experience.
Saturday is the cleanest day of the period — all-green ratings all day. Light 7-10 knot SSW winds and seas easing to 2.9-3.1 feet at 6-second periods from the SSE. Best window is 9:00 AM to 3:00 PM with the lightest winds and smallest seas.
The three-day window opens with caution on Thursday and Friday due to a persistent confused cross-sea, where SSE swell crosses against WNW wind-waves, creating awkward, uncomfortable motion for recreational vessels. Conditions improve meaningfully by Friday afternoon as the cross-sea influence diminishes, and Saturday delivers the cleanest boating of the period with lighter winds and easing seas. Forecast confidence is high at 95% across all three days, so these conditions are well-established.
Islamorada Hump Boating Forecast
Live GO / CAUTION / NO-GO conditions for Islamorada Hump — “The Hump” off Islamorada in the Florida Keys — an underwater seamount that rises sharply into the Gulf Stream and stacks up blackfin tuna, amberjack, and pelagics. Strong current over the structure makes sea state and wind direction the difference between a comfortable troll and a rough ride.
📋 Latest outlook: Flat calm seas and light winds all three days
A great day on the water with light 7–9 knot southwest winds and seas under 1.2 feet all day. Conditions are best from mid-morning onward as winds ease to 7 knots and seas flatten to under 0.7 feet. High forecast confidence throughout.
Exceptional conditions Friday with winds fading to near-calm by midday and seas at just 0.3–0.5 feet. A light evening breeze returns around 7:00 PM EDT but stays well under 10 knots. One of the best days of the forecast period.
Saturday offers near-glassy conditions with winds dropping to near-calm by late morning and seas at just 0.3 feet. A gentle afternoon sea breeze builds to 5–6 knots south but seas stay flat. Excellent conditions all day with high forecast confidence.
An exceptional stretch of boating weather is on tap from Thursday through Saturday, with winds staying well below 10 knots and seas under 1.5 feet across all three days. Models are in strong agreement at 93–95% confidence, making this one of the more reliable near-term forecasts you'll see. There are no meaningful periods to avoid — conditions are favorable from dawn to dusk each day.
Cortez Bank Boating Forecast
Live GO / CAUTION / NO-GO conditions for Cortez Bank — a remote, shallow seamount about 100 miles off San Diego known for world-class fishing and giant open-ocean swell at Bishop Rock. Fully exposed offshore, so a careful read of swell height and period is essential before making the crossing.
📋 Latest outlook: NO-GO all 3 days: confused cross-seas throughout
A NO-GO day driven by a dangerous confused cross-sea, with S swell crossing WNW wind-waves all day long. Waves reach 7.6ft at 9–10 second periods from the SW despite moderate 10–15 knot northwest winds. Stay ashore — the cross-sea makes conditions unsafe regardless of wind.
Friday is a full-day NO-GO with a confused cross-sea — S swell crossing WNW wind-waves — persisting around the clock. Seas hold at 6.2–6.8ft at 8–9 second periods from the WSW with northwest winds gusting to 19 knots at midday. No safe window exists on this day.
Saturday is a NO-GO all day, with a confused cross-sea from S swell crossing WNW wind-waves making conditions unsafe. Seas run 6.2–6.7ft at 7–8 second periods from the west, and winds build to 17 knots WNW with gusts to 20 knots by afternoon. High model confidence leaves no room for optimism.
A persistent S swell crossing WNW wind-waves creates confused, awkward cross-seas across all three days, making conditions unsafe for recreational boating. Wave heights remain in the 6.6–7.6ft range throughout the forecast period, compounding the cross-sea problem. While winds stay in a manageable 10–15 knot range, the sea state alone is the disqualifying factor.
FAD Buoy 1 Boating Forecast
Live GO / CAUTION / NO-GO conditions for FAD Buoy 1 — a fish aggregating device anchored in open water that concentrates mahi-mahi, tuna, and wahoo around it. Open-ocean positioning means conditions can shift fast, so check the latest wind and wave outlook before running out.
📋 Latest outlook: Choppy 3-second seas dominate all three days
A CAUTION day with choppy 3-second WSW wind-waves at 2.4–3.1 feet all day. Best window is 10:00 AM–4:00 PM when winds ease to 12–13 knots west and waves dip slightly. Proceed with caution and expect an uncomfortable, punchy ride throughout.
A CAUTION day with choppy 3-second WSW seas peaking at 3.1 feet midday (10:00 AM–1:00 PM). The best window opens in the evening from 6:00 PM–10:00 PM as winds drop to 6–10 knots WNW and seas ease to 4-second periods. Plan accordingly.
A NO-GO day as waves build to 3.4–3.7 feet at steep 3–4 second periods from the WSW by mid-morning, with west winds gusting to 22 knots. Conditions remain rough all afternoon and evening with no recovery. Stay off the water Saturday.
All three days feature persistent west to WSW winds in the 12–18 knot range driving short, steep 3–4 second period wind-waves from the WSW that make for choppy, uncomfortable conditions throughout the forecast period. Thursday and Friday are borderline CAUTION days where careful timing can find workable windows, but Saturday deteriorates into NO-GO territory as wave heights build to 4+ feet on steep 3–4 second periods. Forecast confidence is high at 95% for Thursday and Friday, and good at 87% for Saturday.
Auckland / Hauraki Gulf Boating Forecast
Live GO / CAUTION / NO-GO conditions for Auckland / Hauraki Gulf — Auckland's inner sea, screened from the open Pacific by Great Barrier Island and the Coromandel Peninsula. The shelter is directional — westerlies are short-fetch, but a sustained northeast runs straight down the gap and the swell arrives with far less to stop it.
📋 Latest outlook: Rough Thu, improving Fri, good conditions Sat
Thursday is a NO-GO. Conditions deteriorate sharply from mid-morning with NNW winds gusting to 24 knots and steep 3.6-foot seas at short 4-second periods making for dangerous, choppy conditions in the afternoon. Avoid all boating until conditions ease after 6:00 PM.
Friday is CAUTION. Steep WNW wind-wave chop with 2-foot seas at 3-second periods and gusts to 22 knots makes the overnight and early morning unsuitable. Conditions ease significantly from 9:00 AM onward — wait until mid-morning before heading out.
Saturday is a GO with light south winds under 10 knots and seas staying around 1-2 feet all day. Conditions are comfortable from dawn to dusk — the best boating day of the forecast window. An early morning departure is ideal to make the most of the day.
Thursday is a NO-GO due to steep, short-period chop building through the afternoon with waves reaching 3.6 feet at just 4-second periods from the NNW and gusts topping 24 knots from the NNW. Friday carries a CAUTION rating — while conditions ease significantly through the day, the overnight-into-morning period features steep wind-wave chop that makes early departures inadvisable. Saturday is the clear GO day of the forecast, with light south winds and manageable seas throughout.
Tauranga Boating Forecast
Live GO / CAUTION / NO-GO conditions for Tauranga — the Bay of Plenty outside Tauranga, where Matakana Island splits the harbour into two entrances. Entrance flow runs hard, and swell against an outgoing tide is what stands the bar up — check the bar itself before committing.
📋 Latest outlook: Caution advised Thu–Sat; best windows Thu morning
Calm and pleasant through 10:00 AM NZST with light north winds and small seas. Afternoon brings steep 2–3ft chop at short 4-second periods from the north as northwest winds build to 12 knots with gusts to 26 knots. Be off the water before midday.
Overnight and morning hours feature a confused cross-sea with N swell crossing WNW wind-wave, making for awkward motion — avoid until at least 10:00 AM NZST. Midday through evening improves significantly with near-calm winds and easing seas. Wave height confidence is low, so conditions may vary.
Morning hours see steep, choppy 1.0–1.5ft seas at short 3-second periods from the ESE with SSE winds to 9 knots — uncomfortable for recreational vessels. Conditions ease through the afternoon and evening becomes quite pleasant with light south winds and small seas. Best to wait until after noon NZST to head out.
All three days carry a CAUTION rating due to periods of steep, short-period wind-wave chop and, on Friday, a confused cross-sea where N swell crosses WNW wind-wave. Thursday morning offers the cleanest window before conditions build, while Friday is the most complex day with cross-swell interaction persisting for much of the day. Saturday settles back down but still sees some short-period chop in the morning hours.
Moreton Bay Boating Forecast
Live GO / CAUTION / NO-GO conditions for Moreton Bay — Brisbane's sheltered water, screened from the Coral Sea by Moreton and North Stradbroke Islands. The bay is shallow, so a fresh southeasterly builds a short steep chop out of proportion to the wind — and the shelter ends where the islands do.
📋 Latest outlook: Caution advised Thu–Sat; steep short-period chop persists
CAUTION all day due to steep, short-period wind-wave chop from the SE at 3–4 second periods. Best window is overnight to early morning (12:00 AM–5:00 AM AEST) and again in the late afternoon (4:00 PM–8:00 PM AEST). Avoid the midday peak when seas reach 2.4 feet with gusts to 26 knots.
CAUTION all day Friday with the steepest conditions of the forecast — seas peak at 2.9 feet at 3-second periods from the SE around 9:00 AM AEST, with gusts to 28 knots. Short-period chop persists all day with no clear comfortable window. High confidence (95%) in these conditions.
CAUTION all day Saturday with steep SE/SSE wind-wave chop at 3–4 second periods. Morning peak reaches 2.8 feet around 8:00 AM AEST — avoid early departures. Best window is early afternoon (1:00 PM–5:00 PM AEST) when seas ease slightly to 2.2 feet and gusts drop to 17–18 knots.
All three days carry a CAUTION rating driven by persistent steep wind-wave chop from the south-southeast, with very short 3–4 second wave periods that produce an uncomfortable, choppy ride despite modest wave heights and light-to-moderate winds. Winds remain manageable at 9–12 knots from the south-southeast throughout the period, but gusts regularly reach 20–28 knots, adding to the rough sea state. Forecast confidence is high across all three days (88–95%), so these conditions are well-established and unlikely to change significantly.
Sydney Boating Forecast
Live GO / CAUTION / NO-GO conditions for Sydney — Sydney's exposed coastal water, where the pattern to respect from October to February is the southerly buster — an abrupt afternoon southerly change that can gust over 40 knots within minutes of arriving.
📋 Latest outlook: Large swells make this a NO-GO weekend
A powerful south swell keeps seas at 5.4–6.3ft all day despite light winds, making Thursday a NO-GO. Waves peak at 6.3ft at 9-second periods from the south between 2:00 PM and 8:00 PM AEST. Stay ashore — conditions are unsafe for recreational boating.
Friday's south-southeast swell holds at 6.0–6.2ft all day with the worst seas (bad classification) from 6:00 AM to 10:00 AM AEST. Light winds offer no relief from the large swell. Friday is a firm NO-GO with very high forecast confidence.
Saturday's SSE swell eases slightly to 5.0–5.2ft at 8–9 second periods, but a confused cross-sea develops as SSE swell crosses WNW wind-waves, creating uncomfortable motion. Winds are very light (2–6 knots) all day. CAUTION applies — the morning window (6:00 AM–11:00 AM AEST) is the least unfavorable, but seas remain too large for most recreational boating.
A powerful south to south-southeast swell train is dominating the forecast across all three days, pushing seas to 6 feet and above despite light winds. While wind conditions are benign throughout the period, the wave heights alone are enough to make conditions unsafe for recreational boating. Saturday offers the best relative conditions as the swell slowly eases, but seas remain too large to recommend heading out.
Cook Strait Boating Forecast
Live GO / CAUTION / NO-GO conditions for Cook Strait — the exposed water south of Wellington Harbour, where the gap between the North and South Islands funnels and accelerates the weather. Strong tidal streams mean wind against tide, not wind speed alone, is what decides the day.
📋 Latest outlook: NO-GO all 3 days — dangerous seas throughout
A full NO-GO day with NNW winds peaking at 34 knots gusting to 47 knots and steep wind-wave chop reaching 9 feet at 6-second periods from the NNW. Short, punishing seas persist all 24 hours with no relief. Stay in port.
Friday starts with steep NW wind-wave chop of 5–7 feet at 5-second periods, then a powerful SSW swell arrives at noon and explodes to nearly 17 feet by evening. Winds peak at 33 knots SSW gusting to 46 knots. A full NO-GO day — stay ashore.
Saturday's winds ease to good levels by 10:00 AM NZST, but a massive S/SSW swell of 8–16 feet at 9–10-second periods dominates all day. Wave heights alone make this a NO-GO — no safe departure windows exist despite the improving wind picture.
A powerful storm system is driving dangerous conditions across the entire forecast period, with no safe windows for recreational boating. Sustained winds of 24–34 knots and steep, short-period wind-wave chop on Thursday and Friday give way to an even more severe SSW swell event on Friday afternoon through Saturday, pushing seas to nearly 17 feet. All three days carry NO-GO classifications with high model confidence (90–95%), leaving no viable departure windows this period.
Perth Boating Forecast
Live GO / CAUTION / NO-GO conditions for Perth — Perth's coastal water, run on a clock by the Fremantle Doctor — the 15–20 knot southwesterly sea breeze that fills in most warm-season afternoons. Mornings are usually the calm half of the day.
📋 Latest outlook: CAUTION Thu; NO-GO Fri–Sat as swell builds dangerously
Thursday offers a cautious window, with the calmest conditions from 12:00 PM–5:00 PM AWST when winds drop to 5–7 knots west-northwest. A confused cross-sea (WSW swell crossing north wind-waves) and periods of steep wind-wave chop require care. Be off the water before Friday's deterioration begins.
Friday is NO-GO. Seas build rapidly from 4.3ft at midnight to nearly 8ft by afternoon, with steep wind-wave chop developing from 4:00 AM AWST. Winds reach 20+ knots SSW with gusts to 29 knots by evening. Stay ashore all day.
Saturday is NO-GO all day. Seas of 7.3–8.0ft from the SW at 12–13 second periods persist around the clock, with SSE winds of 17–22 knots and gusts to 26 knots. No safe window exists — stay ashore.
A building southwest swell dominates this three-day window, with conditions deteriorating sharply from Thursday into the weekend. Thursday offers the only viable window, though a confused cross-sea and some steep wind-wave chop require caution. Friday and Saturday are firmly no-go as seas climb to 8 feet with strong winds — all models agree with very high confidence across the forecast period.
Strait of Georgia Boating Forecast
Live GO / CAUTION / NO-GO conditions for Strait of Georgia — the open water between Vancouver and Nanaimo, sheltered from Pacific swell by Vancouver Island. Almost all of its sea is locally generated wind chop, so a summer northwesterly building through the afternoon matters more here than any swell arriving from offshore.
📋 Latest outlook: Excellent boating conditions across all three days
A classic sea-breeze day with calm mornings and moderate ESE winds peaking at 16 knots with gusts to 22 knots in the early afternoon. Seas reach 1.8 feet at short 2-second periods from the east during the peak but ease by evening. Early departures before 8:00 AM or evening runs after 8:00 PM offer the smoothest ride.
The standout day of the forecast with winds maxing at just 6 knots east and seas under 0.5 feet from the ESE all day. Conditions are glassy and calm from morning through evening with 95% model confidence. An ideal day for any on-water activity.
A beautiful calm morning with winds under 8 knots and near-flat seas, but a strong SSE afternoon sea breeze brings 16-knot winds with gusts to 28 knots and 2.3-foot steep chop by 5:00–6:00 PM. Plan to be off the water or sheltered before 4:00 PM. Morning departures by 7:00 AM make the most of the excellent early conditions.
All three days carry a GO verdict with very high model confidence (95%) across every parameter. Thursday sees a typical sea-breeze pattern with light morning winds building to moderate ESE afternoon breezes, while Friday is the standout calm day of the forecast. Saturday starts beautifully but sees a brisk afternoon SSE wind event that boaters should plan around.
Halifax Approaches Boating Forecast
Live GO / CAUTION / NO-GO conditions for Halifax Approaches — the open Atlantic approaches south of Chebucto Head, outside the shelter of Halifax Harbour. Long-period swell runs here independently of local wind, so a calm morning ashore says very little about the sea state past the headland.
📋 Latest outlook: NO-GO Thu; cautious Friday–Saturday with large swells
Thursday is a NO-GO. Winds peak at 22kt east with 29kt gusts, waves reach 6.4ft at steep 5-second periods, and a confused cross-sea (SSE swell crossing east wind-wave) creates dangerous, unpredictable motion. Heavy rain and rough seas persist all day — stay ashore.
Friday is CAUTION all day. Winds are light at 3–11kt southwest, but residual swell from Thursday's storm keeps seas at 4.9–6.0ft at 7–8 second periods from the south. The organized swell is rolling rather than choppy, but the height makes for a tiring ride — proceed with care.
Saturday is CAUTION, improving slightly through the day. Winds are light to moderate at 3–13kt from the west and west-northwest. Seas ease from 5.7ft overnight to 4.3ft by late evening at 7–8 second periods from the south. Best window is after 8:00 PM ADT when wave conditions improve to good.
A significant weather system drives this forecast into NO-GO territory for Thursday, July 30, with heavy precipitation, steep wind-wave chop, and a confused cross-sea making conditions unsafe for recreational vessels. Friday and Saturday see winds ease considerably, but a large southerly swell lingering from the storm keeps both days at CAUTION — the seas remain elevated well above comfortable levels despite calm winds. All three forecast days carry 95% model confidence, so these conditions are well-established and unlikely to change.
ボート天気予報 よくある質問
ボート天気予報とは？
ボート天気予報とは、水上で重要となる条件、つまり風速と風向、波高と周期、そして全体的な海況に焦点を当てた海洋気象予報を、特定のスポットと時間帯について示すものです。SeaLegs AI はそれらの生の状況をシンプルな GO・CAUTION・NO-GO の評価に変換するので、出航に適した日かどうかをひと目で判断できます。
GO・CAUTION・NO-GO とは何を意味しますか？
GO は、ほとんどのプレジャーボートにとって条件が好ましいことを意味します。CAUTION は条件が際どいことを意味し、能力のある船と経験豊富なボーターなら対応できますが、風と波のタイミングをよく確認する価値があります。NO-GO は、小型船にとって危険で、出航は延期するのが望ましいことを意味します。
ボート天気予報はどのくらいの頻度で更新されますか？
各スポットのカードには、新しい海洋モデルデータが公開されるたびに更新されるリアルタイムの状況が表示されます。ご自身の正確な出航地点に合わせた予報がほしい場合は、SeaLegs AI アプリをダウンロードして、ご自身のスポットを追加してください。
自分のスポットのボート天気予報を入手できますか？
はい。注目スポットはあくまで一例です。無料の SeaLegs AI アプリでは、地球上のあらゆる場所を追加して、その正確なスポットの AI ボート天気予報を、GO/CAUTION/NO-GO のガイダンス、釣果レポート、釣行プランとともに入手できます。
あなたのスポットのボート天気予報を入手
この4つのスポットはほんの始まりにすぎません。地球上のあらゆるスポットの AI ボート天気予報、釣果レポート、釣行プランを、無料で入手できます。
📍 近くの海洋気象予報を入手 →または直接ダウンロード：