Atlantis Canyon Marine Forecast
Updated Tue Nov 3, 2026
Tue and Wed look good; Thursday needs careful timing
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Marine Forecast for Atlantis Canyon Nov 3–5, 2026
📋 Tue and Wed look good; Thursday needs careful timing
A GO day, so any time works for the 12h trip. Expect 6-12 knots west-southwest winds with gusts to 16 knots and 2.1-2.6 feet southwest seas at 5-second periods, a bit choppy but manageable. Winds and waves stay in the good range all day.
A GO day, so any time works for the 12h trip. Winds are light at 7-10 knots from the south-southwest with gusts to 13 knots, and seas run 2.1-2.5 feet from the south at 5-second periods. Conditions stay steady and favorable around the clock.
CAUTION; timing matters. Winds build to 10-14 knots from the south with gusts to 18 knots, and seas grow to 2.6-4.4 feet at 6-second periods. Expect steep wind-wave chop and a confused cross-sea, with SE swell crossing the SSW wind-wave, making for awkward, uncomfortable motion with no single good heading. Waves are good through 1:00 PM, then turn marginal from 2:00 PM onward, so go early.
Tuesday 2:00 PM into Wednesday 1:00 AM is the pick, with about 8 knots west-southwest winds and 2.4 feet seas at 5-second periods, and Wednesday is nearly as good all day.
Recent days at Atlantis Canyon
About Atlantis Canyon
Atlantis Canyon cuts the shelf edge roughly 100 nautical miles south of Martha's Vineyard, between Block Canyon to the west and Veatch to the east. It is one of the longer runs in the Southern New England fleet — out of Montauk, Point Judith or Block Island — and a reliable one for bigeye and yellowfin tuna, white and blue marlin, mahi and swordfish when the warm water pushes up onto the edge.
At that distance there is no ducking back in when the wind comes up, so the forecast below is built around the two things that decide a canyon trip: wind against current and swell period. Each day gets an honest GO, CAUTION, or NO-GO call — the same AI rating used in the SeaLegs AI app.
Reading conditions at Atlantis Canyon
The canyon sits where the bottom falls away at the shelf break, and offshore swell arrives there with nothing to soften it. Short-period seas that feel manageable inside the Race or off Point Judith stack up steep and close over the edge, and a southwest blow against the current makes it worse. When you read the days below, weight the wave period as heavily as the height: 5 feet at 12 seconds can be a comfortable ride out, while 4 feet at 5 seconds is a punishing one.
Plan the whole window, not just the departure. A hundred-mile run each way makes this a 20-hour day at minimum, and commonly an overnight for the tuna bite — so a forecast that opens calm and builds through the afternoon can close the door on the ride home. The three-day view above is exactly for that call: pick the day the window stays open on both ends, and always confirm the official NWS offshore waters forecast and marine warnings before you leave the dock.
Atlantis Canyon forecast FAQ
How is the sea at Atlantis Canyon today?
As of Nov 3, 2026, the SeaLegs AI verdict for Atlantis Canyon is GO. A GO day, so any time works for the 12h trip. Expect 6-12 knots west-southwest winds with gusts to 16 knots and 2.1-2.6 feet southwest seas at 5-second periods, a bit choppy but manageable. Winds and waves stay in the good range all day.
How far offshore is Atlantis Canyon?
Atlantis Canyon lies roughly 100 nautical miles south of Martha's Vineyard, at the edge of the continental shelf. From Montauk, Point Judith or Block Island that is commonly a 100-to-110-mile run each way, with no shelter once you are past the shelf break.
What fish does Atlantis Canyon hold?
The shelf-break canyon concentrates bigeye and yellowfin tuna, white and blue marlin, mahi and swordfish along the warm temperature edge, with the bigeye bite the one most Southern New England crews run for.
How often is this Atlantis Canyon forecast updated?
The forecast on this page is rebuilt every morning from the latest marine model data, and the SpotCast card refreshes live in your browser. The date stamp above the outlook shows exactly when it was last generated.
What do GO, CAUTION, and NO-GO mean?
GO means conditions are favorable for most recreational offshore boats. CAUTION means marginal — manageable for experienced crews in capable vessels, but check the wind, swell period, and timing closely. NO-GO means conditions are hazardous for small craft and the trip is best postponed.
Can I get a forecast like this for my own spot?
Yes. In the free SeaLegs AI app you can drop a pin on any spot on Earth — Atlantis, Veatch, Block, or your own canyon numbers — and get the same AI-rated marine forecast, plus fishing reports and trip planning.
More offshore forecasts
Get this forecast for your own spot
Drop a pin on any spot on planet Earth in the free SeaLegs AI app — AI marine forecasts, fishing reports, and trip planning, rated GO / CAUTION / NO-GO.
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