United States

John D MacArthur Beach State Park

3–12 mMax Depth

shoreEntry

35Species

Conditions Summary

Model forecast · local time (GMT-4)

Model conditions signal81/100

Waves

0.6 m

7.0 s

Swell

0.4 m

8.0 s

Current speed

2.5 km/h

flowing toward N

Water temperature

29.8°C

Wind

22.4 km/h

→ N

Sea level

-0.3 m

rising

WavesWatch

SwellCalm

Current speedWatch

Planning window

21:00–22:00

Calmest model window

Forecast Overview

Sat, Oct 17Watch

Waves0.6–0.7 mCurrent speed2.5 km/h maxWater temperature29.8°C

Sun, Oct 18Challenging

Waves0.8–3.4 mCurrent speed2.5 km/h maxWater temperature29.7°C

Mon, Oct 19Challenging

Waves3.1–3.4 mCurrent speed1.1 km/h maxWater temperature29.1°C

Tue, Oct 20Challenging

Waves2.6–3.3 mCurrent speed0.4 km/h maxWater temperature29.0°C

Next 72 hours

21:00

Waves: 0.6 m

Current speed: 2.5 km/h

Water temperature: 29.8°C

03:00

Waves: 1.2 m

Current speed: 2.5 km/h

Water temperature: 29.8°C

09:00

Waves: 2.7 m

Current speed: 2.3 km/h

Water temperature: 29.7°C

15:00

Waves: 2.9 m

Current speed: 0.9 km/h

Water temperature: 29.7°C

21:00

Waves: 3.2 m

Current speed: 0.4 km/h

Water temperature: 29.6°C

03:00

Waves: 3.3 m

Current speed: 1.1 km/h

Water temperature: 29.4°C

09:00

Waves: 3.2 m

Current speed: 0.6 km/h

Water temperature: 29.1°C

15:00

Waves: 3.3 m

Current speed: 0.4 km/h

Water temperature: 29.0°C

21:00

Waves: 3.4 m

Current speed: 0.3 km/h

Water temperature: 29.0°C

03:00

Waves: 3.2 m

Current speed: 0.2 km/h

Water temperature: 29.0°C

09:00

Waves: 2.9 m

Current speed: 0.4 km/h

Water temperature: 28.9°C

15:00

Waves: 2.7 m

Current speed: 0.3 km/h

Water temperature: 29.0°C

Catalog depth3–12 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

Apr-Oct

Peak month

Aug 29.5°

Jan25.0°

Feb24.9°

Mar25.1°

Apr25.9°

May27.0°

Jun28.2°

Jul29.1°

Aug29.5°

Sep29.2°

Oct28.4°

Nov27.1°

Dec26.0°

Current: moderate

Typical visibility: 10 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

shoresalt 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 mangrove

Rhizophora mangle

DeepLog5

Portuguese man o'war

Physalia physalis

DeepLog4

Checkered puffer

Sphoeroides testudineus

DeepLog3

Lettered olive

Oliva sayana

DeepLog3

Spectral bittersweet

Glycymeris spectralis

DeepLog3

West indian nerite

Nerita fulgurans

DeepLog3

Bluehead

Thalassoma bifasciatum

DeepLog2

Crested goby

Lophogobius cyprinoides

DeepLog2

Flathead grey mullet

Mugil cephalus

DeepLog2

Oyster

Crassostrea virginica

DeepLog2

Sooty seahare

Aplysia morio

DeepLog2

Tinted cantharus

Gemophos tinctus

DeepLog2

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

DeepLog + OBIS →

Photos

John D MacArthur Beach State Park photo 2

John D MacArthur Beach State Park photo 3