North America › Mexico

San Juan Reef

5–25 mMax Depth

boatEntry

79Species

Conditions Summary

Model forecast · local time (GMT-5)

Model conditions signal100/100

Waves

0.4 m

5.3 s

Swell

0.2 m

4.5 s

Current speed

1.0 km/h

flowing toward N

Water temperature

29.9°C

Wind

14.7 km/h

→ E

Sea level

0.2 m

rising

WavesCalm

SwellCalm

Current speedCalm

Planning window

14:45–14:00

Calmest model window

Forecast Overview

Tue, Oct 20Calm

Waves0.3–0.4 mCurrent speed1.2 km/h maxWater temperature29.9°C

TodayCalm

Waves0.3–0.5 mCurrent speed1.0 km/h maxWater temperature29.7°C

TomorrowCalm

Waves0.2–0.4 mCurrent speed0.9 km/h maxWater temperature29.7°C

Fri, Oct 23Calm

Waves0.3–0.3 mCurrent speed0.4 km/h maxWater temperature29.6°C

Next 72 hours

14:00

Waves: 0.4 m

Current speed: 1.0 km/h

Water temperature: 29.9°C

20:00

Waves: 0.4 m

Current speed: 1.0 km/h

Water temperature: 29.9°C

02:00

Waves: 0.4 m

Current speed: 1.0 km/h

Water temperature: 29.7°C

08:00

Waves: 0.4 m

Current speed: 0.9 km/h

Water temperature: 29.7°C

14:00

Waves: 0.5 m

Current speed: 0.7 km/h

Water temperature: 29.8°C

20:00

Waves: 0.4 m

Current speed: 0.8 km/h

Water temperature: 29.7°C

02:00

Waves: 0.3 m

Current speed: 0.8 km/h

Water temperature: 29.7°C

08:00

Waves: 0.2 m

Current speed: 0.6 km/h

Water temperature: 29.6°C

14:00

Waves: 0.3 m

Current speed: 0.4 km/h

Water temperature: 29.7°C

20:00

Waves: 0.4 m

Current speed: 0.4 km/h

Water temperature: 29.7°C

02:00

Waves: 0.3 m

Current speed: 0.4 km/h

Water temperature: 29.6°C

08:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 29.6°C

Catalog depth5–25 m

Data sources & field guideOpen-Meteo Marine + Weather APIs

Planning context, not a safety guarantee. Coastal model accuracy is limited. Confirm the actual briefing, entry, exit, and suitability with a local operator.

Open-Meteo Marine + Weather APIs →

Dive readiness

Collecting the latest marine conditions and forecast signals.

Seasons · water temperature

12-month outlook

Best window

Year-round

Peak month

Sep 29.4°

Jan26.7°

Feb26.5°

Mar26.6°

Apr27.2°

May28.0°

Jun28.6°

Jul28.9°

Aug29.3°

Sep29.4°

Oct29.0°

Nov28.1°

Dec27.3°

Current: mild

Typical visibility: 20 m

Historical planning data from the recorded site profile. Water temperature and conditions can vary by day, depth, and weather; confirm current conditions with a local operator.

Explore nearby centers on the map

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Dive Types

reefsalt Waterbeginner Difficulty

Questions to ask a local operator

What are today's current, visibility, entry, and exit conditions?
Does the planned route stay within my certification and recent experience?
Are there local permits, conservation rules, or equipment requirements?

Common Species

12 km · nearby observations

Red lionfish

Pterois volitans

DeepLog7

Hound needlefish

Tylosurus crocodilus

DeepLog6

Puddingwife

Halichoeres radiatus

DeepLog6

Yellow stingray

Urobatis jamaicensis

DeepLog6

Ringtail

Acanthurus tractus

DeepLog5

Yellowtail damselfish

Microspathodon chrysurus

DeepLog5

Angelfish

Pomacanthus paru

DeepLog4

Black urchin

Diadema antillarum

DeepLog4

Bluehead

Thalassoma bifasciatum

DeepLog4

Blue tang surgeonfish

Acanthurus coeruleus

DeepLog4

Spotted moray

Gymnothorax moringa

DeepLog4

Trumpetfish

Aulostomus maculatus

DeepLog4

These are nearby biodiversity records, not a guarantee that every species will be seen on a particular dive.

DeepLog + OBIS →

Photos