Saint Maarten

The Alleys

5–25 mMax Depth

boatEntry

68Species

Conditions Summary

Model forecast · local time (GMT-4)

Model conditions signal91/100

Waves

0.6 m

8.1 s

Swell

0.3 m

12.6 s

Current speed

0.2 km/h

flowing toward W

Water temperature

29.5°C

Wind

11.0 km/h

→ E

Sea level

0.4 m

WavesWatch

SwellCalm

Current speedCalm

Planning window

01:45–01:00

Calmest model window

Forecast Overview

Tue, Oct 20Watch

Waves0.6–0.9 mCurrent speed0.5 km/h maxWater temperature29.6°C

TodayWatch

Waves0.7–0.8 mCurrent speed0.4 km/h maxWater temperature29.6°C

TomorrowWatch

Waves0.7–0.9 mCurrent speed0.6 km/h maxWater temperature29.6°C

Fri, Oct 23Watch

Waves0.8–0.8 mCurrent speed0.0 km/h maxWater temperature29.6°C

Next 72 hours

01:00

Waves: 0.6 m

Current speed: 0.3 km/h

Water temperature: 29.5°C

07:00

Waves: 0.7 m

Current speed: 0.2 km/h

Water temperature: 29.4°C

13:00

Waves: 0.8 m

Current speed: 0.5 km/h

Water temperature: 29.9°C

19:00

Waves: 0.9 m

Current speed: 0.2 km/h

Water temperature: 29.7°C

01:00

Waves: 0.8 m

Current speed: 0.3 km/h

Water temperature: 29.5°C

07:00

Waves: 0.8 m

Current speed: 0.0 km/h

Water temperature: 29.5°C

13:00

Waves: 0.8 m

Current speed: 0.4 km/h

Water temperature: 29.8°C

19:00

Waves: 0.7 m

Current speed: 0.2 km/h

Water temperature: 29.7°C

01:00

Waves: 0.7 m

Current speed: 0.3 km/h

Water temperature: 29.5°C

07:00

Waves: 0.8 m

Current speed: 0.0 km/h

Water temperature: 29.5°C

13:00

Waves: 0.9 m

Current speed: 0.4 km/h

Water temperature: 29.8°C

19:00

Waves: 0.8 m

Current speed: 0.3 km/h

Water temperature: 29.7°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.

Updated: cached data

Open-Meteo Marine + Weather APIs →

Dive readiness

Collecting the latest marine conditions and forecast signals.

Seasons · water temperature

12-month outlook

Best window

Nov-Jul

Peak month

Sep 28.8°

Jan26.4°

Feb26.1°

Mar26.1°

Apr26.7°

May27.4°

Jun27.9°

Jul28.1°

Aug28.5°

Sep28.8°

Oct28.8°

Nov28.2°

Dec27.3°

Current: mild

Typical visibility: 25 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

salt 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

Whitespoted filefish

Cantherhines macrocerus

DeepLog6

Angelfish

Pomacanthus paru

DeepLog5

Blackbar soldierfish

Myripristis jacobus

DeepLog4

French grunt

Haemulon flavolineatum

DeepLog4

Great barracuda

Sphyraena barracuda

DeepLog4

Pangler

Holacanthus ciliaris

DeepLog4

Red hind

Epinephelus guttatus

DeepLog4

Blue tang surgeonfish

Acanthurus coeruleus

DeepLog3

Coney

Cephalopholis fulva

DeepLog3

Giant basket star

Astrophyton muricatum

DeepLog3

Redband parrotfish

Sparisoma aurofrenatum

DeepLog3

Redbelly

Sparisoma viride

DeepLog3

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

DeepLog + OBIS →

Photos