United States

Cedar Island Ledge

12–21 mMax Depth

boatEntry

21Species

Conditions Summary

Model forecast · local time (GMT-4)

Model conditions signal91/100

Waves

0.8 m

4.8 s

Swell

0.4 m

6.0 s

Current speed

0.8 km/h

flowing toward SE

Water temperature

13.8°C

Wind

43.1 km/h

→ NW

Sea level

-0.3 m

falling

WavesWatch

SwellCalm

Current speedCalm

Planning window

06:30–06:00

Calmest model window

Forecast Overview

Sat, Oct 17Watch

Waves0.5–0.8 mCurrent speed0.8 km/h maxWater temperature13.6°C

Sun, Oct 18Calm

Waves0.3–0.5 mCurrent speed0.8 km/h maxWater temperature13.5°C

Mon, Oct 19Calm

Waves0.3–0.7 mCurrent speed0.8 km/h maxWater temperature13.7°C

Tue, Oct 20Watch

Waves0.8–1.1 mCurrent speed0.3 km/h maxWater temperature13.6°C

Next 72 hours

06:00

Waves: 0.8 m

Current speed: 0.8 km/h

Water temperature: 13.8°C

12:00

Waves: 0.7 m

Current speed: 0.4 km/h

Water temperature: 13.7°C

18:00

Waves: 0.7 m

Current speed: 0.5 km/h

Water temperature: 13.6°C

00:00

Waves: 0.5 m

Current speed: 0.2 km/h

Water temperature: 13.4°C

06:00

Waves: 0.3 m

Current speed: 0.3 km/h

Water temperature: 13.3°C

12:00

Waves: 0.3 m

Current speed: 0.5 km/h

Water temperature: 13.5°C

18:00

Waves: 0.3 m

Current speed: 0.6 km/h

Water temperature: 13.5°C

00:00

Waves: 0.3 m

Current speed: 0.8 km/h

Water temperature: 13.5°C

06:00

Waves: 0.3 m

Current speed: 0.5 km/h

Water temperature: 13.4°C

12:00

Waves: 0.3 m

Current speed: 0.4 km/h

Water temperature: 13.8°C

18:00

Waves: 0.5 m

Current speed: 0.4 km/h

Water temperature: 13.8°C

00:00

Waves: 0.8 m

Current speed: 0.3 km/h

Water temperature: 13.7°C

Catalog depth12–21 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

May-Oct

Peak month

Aug 18.3°

Jan5.6°

Feb4.2°

Mar3.8°

Apr5.6°

May9.4°

Jun14.0°

Jul17.5°

Aug18.3°

Sep16.6°

Oct13.1°

Nov9.7°

Dec7.5°

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

Cunner

Tautogolabrus adspersus

DeepLog15

Common periwinkle

Littorina littorea

DeepLog7

Bunch whale

Megaptera novaeangliae

DeepLog5

Periwinkle

Littorina obtusata

DeepLog5

Blue mussel

Mytilus edulis

DeepLog3

Atlantic gray seal

Halichoerus grypus

DeepLog1

Atlantic mackerel

Scomber scombrus

DeepLog1

Barnacle-eating dorid

Onchidoris bilamellata

DeepLog1

Common porpoise

Phocoena phocoena

DeepLog1

Common seal

Phoca vitulina

DeepLog1

Cyanea fulva

DeepLog1

Longhorn sculpin

Myoxocephalus octodecemspinosus

DeepLog1

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

DeepLog + OBIS →

Photos