Scuba Diving · Puerto Rico

Scuba Diving in Puerto Rico

Clear Caribbean water with real structure: the La Parguera wall on the southwest shelf drops into deep blue, while Fajardo and the islands of Culebra and Vieques offer reef and drift diving to the east. Warm and diveable year-round.

Live conditions, water-clarity forecast, and water temperature for scuba diving in Puerto Rico. Open the app for a live verdict and a tappable factor breakdown, free, no signup. Pro extends the forecast to 8 days.

Open live conditions →

Conditions snapshot: Oct 5, 2026

Visibility

39 ft

27–57 ft range

Water

86°F

Wind

4 kts

Wave

1.6 ft

Swell

1.6 ft

Period

3.9s

Snapshot from Oct 5, 2026. Live values, factor breakdowns, and 8-day forecast in the app.

Notable species

Puerto Rico is known for:

HogfishMutton SnapperGrouperBarracudaTarpon

Typical water visibility

Summer visibility around Puerto Rico is commonly reported in the 40–90 ft range, a community-guidance estimate, not a measurement. Rain, river discharge, swell mixing, and seasonality can shift real conditions dramatically day to day.

That's exactly why Submarius exists. The in-app clarity forecast starts from this coast's typical clarity for the time of year, built from in water measurements and satellite ocean color, then subtracts wave stirring, river and runoff plumes, and tide movement to estimate how far you'll actually see, shown as a low to high range, not a seasonal average.

How the clarity forecast works →

Clearest months at Puerto Rico

Model climatology from the baked clarity ceiling: the typical day and the best case (90th percentile) visibility for each month, with a seasonal algae bloom proneness flag. These are labelled model estimates, not measurements.

Month	Typical ft	Best case ft	Bloom risk
Jan	15	57	low
Feb	49	57	low
Mar	37	57	low
Apr	36	50	low
May	34	47	low
Jun	34	64	low
Jul	36	59	low
Aug	38	57	low
Sep	41	57	low
Oct	41	57	low
Nov	36	57	low
Dec	30	57	low

Ceiling artifact global-reef-v10-obis-world; table baked Oct 5, 2026.

What Submarius shows for Puerto Rico

Verdict score (0–10). Aggregates wind, swell, tide, moon, and water clarity into one decisive number.
Best window. The 2–3 hour stretch each day when conditions peak.
8-day forecast. Auto-scaled line graph showing which day this week is trending good.
Water clarity forecast. Secchi-depth estimate with uncertainty bounds and the next best vis window.
Free, anonymous. Check conditions with location on, no signup until you want to save spots or post reports.

Safety in the water

Submarius ships OCEARCH tagged-shark alerts, community shark sightings, SOS, and buddy GPS sharing, permanently free, regardless of subscription tier. For Puerto Rico specifically, the app shows any recent tagged sharks within range and lets you enable push notifications for sightings on your active tiles.