Submarius Open the app →
Scuba Diving · 18 coastal destinations

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 spot

South Carolina

1 spot

Florida

9 spots
Key Largo
Florida Keys

Diving 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.

Typical summer viz · 30–80 ft
Islamorada
Florida Keys

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.

Typical summer viz · 30–70 ft
Key West
Florida Keys

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.

Typical summer viz · 30–80 ft
Jupiter
Southeast Florida

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.

Typical summer viz · 40–90 ft
Pompano Beach
Southeast Florida

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.

Typical summer viz · 40–80 ft
Miami
Southeast Florida

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.

Typical summer viz · 30–70 ft
Tampa Bay
West Florida

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.

Typical summer viz · 5–25 ft
Destin
Florida Panhandle

"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.

Typical summer viz · 20–60 ft
Naples
Southwest Florida

Inshore snook and tarpon fishing, plus the run to the Middle Grounds for serious offshore trips. Easy-bottom Gulf of Mexico inside 20 miles.

Typical summer viz · 10–35 ft

California

4 spots

Hawaii

3 spots

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.

Water clarity forecast

How the Submarius clarity model works — satellite data, river plumes, and post-dive reports.

Bite score

What the 0–10 number means, which signals it uses, and why most other bite scores are wrong.

Scuba Diving app

The full pitch — what Submarius does for diving and how it compares to other apps.

Common questions

How does the water-clarity forecast work for scuba diving?

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.

Does Submarius show thermocline or current for diving?

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.

Are the safety features available to free users?

Yes, permanently. Shark alerts (OCEARCH tagged-shark tracking + community sightings), buddy GPS sharing, and SOS are always free regardless of Pro tier.

Ready to check today's conditions?

Live data. Honest verdict. No signup.