Scuba Diving conditions by location
Live marine conditions, water-clarity forecasts, tide and moon windows, and a single go/no-go verdict for every coastal diving destination we cover. Free, no signup.
North Carolina
1 spotSouth Carolina
1 spotFlorida
9 spotsDiving capital of the US. Crystal-clear tropical water, shallow patch reefs, and deep wrecks including the Spiegel Grove and Duane. Consistently 30–80ft viz in summer, more volatile in winter.
Sportfishing capital of the world. Deep water close to shore, the edge of the Gulf Stream within a short run. Sailfish winter push, mahi summer runs.
Southernmost reef structure in the continental US. Marquesas and Dry Tortugas trips for permit, tarpon, and offshore pelagics. Shallower patch reefs inshore for snapper and grouper.
Deep ledge runs just offshore, plus the inlet drift for big snook and tarpon. Strong Gulf Stream influence — pelagics push close in when conditions align.
Shipwreck alley — dozens of intentionally sunk wrecks within 20 minutes of the inlet, plus the world's largest artificial reef project. Year-round diving, reliable sailfish in winter.
Haulover, Government Cut, and the edge of the Gulf Stream just minutes offshore. Sailfish, kingfish, and mahi runs year-round. Bonefish flats in Biscayne Bay on the back side.
Massive estuary with tarpon runs in May–July, redfish and snook year-round in the grass flats, and offshore depth for grouper within 30 miles.
"World's luckiest fishing village." Deep water closer to shore than most Gulf ports. Red snapper mecca in season, cobia push in spring, offshore tuna trips year-round.
Inshore snook and tarpon fishing, plus the run to the Middle Grounds for serious offshore trips. Easy-bottom Gulf of Mexico inside 20 miles.
California
4 spotsKelp forests for white seabass and halibut, plus offshore runs to the Coronado Islands and the Tanner Bank. Cool Pacific water year-round; viz improves with offshore winds.
Marine reserve at La Jolla Cove, kelp forest divable year-round. Outside the reserve: legendary freediving for white seabass and calico bass.
One of the most popular spearfishing and diving islands on the US West Coast. Kelp forests on the front side, bluewater pelagic shots on the back side. Short ferry from LA/OC.
Deep canyon starts feet from shore. Cold, plankton-rich water — lower viz but world-class kelp forest ecology, lingcod, and cabezon for divers.
Hawaii
3 spotsKnown for bluewater spearfishing — mahi, wahoo, and yellowfin tuna off the offshore FAD buoys. North Shore surf breaks in winter are a major draw.
Kona side drops off faster than almost anywhere in the world — 1000ft contour within a mile of shore. Big blue marlin and yellowfin tuna within sight of the harbor.
Molokini Crater diving, Honolua Bay on calm days, plus bluewater trips between the islands. Winter humpback whale migration routes overlap fishing grounds.
How Submarius handles diving
Every location page shows the same thing: live wind, swell, tide, and water-clarity data pulled from free public sources (Open-Meteo Marine, NOAA, NOAA CoastWatch, USGS Water Services) — aggregated into one verdict you can read in a second. Every factor is tappable for the full reasoning. No black-box AI claims.
How the Submarius clarity model works — satellite data, river plumes, and post-dive reports.
What the 0–10 number means, which signals it uses, and why most other bite scores are wrong.
The full pitch — what Submarius does for diving and how it compares to other apps.
Common questions
We estimate Secchi depth from NOAA CoastWatch Kd490 satellite data (via the Lee 2015 relationship), then adjust for recent river-discharge plumes (USGS), wave-mixing effects, HAB bulletins, and coastline geometry. Forecasts carry explicit uncertainty bounds.
Bottom and surface temperatures are shown alongside the verdict. Current estimates come from marine-forecast models where available. Dive-profile integration (depth, bottom time) is on the roadmap — for now the app focuses on the go/no-go conditions answer.
Yes, permanently. Shark alerts (OCEARCH tagged-shark tracking + community sightings), buddy GPS sharing, and SOS are always free regardless of Pro tier.