Netherlands

Oostnol Colijnsplaat

7–30 mMax Depth

shoreEntry

21Species

Conditions Summary

Model forecast · local time (GMT+2)

Model conditions signal71/100

Waves

1.1 m

6.4 s

Swell

1.0 m

5.3 s

Current speed

0.2 km/h

flowing toward N

Water temperature

16.8°C

Wind

11.2 km/h

→ E

Sea level

-1.4 m

rising

WavesChallenging

SwellWatch

Current speedCalm

Planning window

00:00–01:00

Calmest model window

Forecast Overview

Sun, Oct 18Watch

Waves0.8–1.1 mCurrent speed1.8 km/h maxWater temperature16.8°C

Mon, Oct 19Watch

Waves0.6–0.8 mCurrent speed2.9 km/h maxWater temperature16.7°C

Tue, Oct 20Watch

Waves0.6–0.8 mCurrent speed3.1 km/h maxWater temperature16.3°C

TodayWatch

Waves0.4–0.8 mCurrent speed3.1 km/h maxWater temperature16.1°C

Next 72 hours

15:00

Waves: 1.1 m

Current speed: 0.9 km/h

Water temperature: 16.8°C

21:00

Waves: 0.9 m

Current speed: 0.6 km/h

Water temperature: 16.8°C

03:00

Waves: 0.7 m

Current speed: 1.9 km/h

Water temperature: 16.7°C

09:00

Waves: 0.6 m

Current speed: 0.7 km/h

Water temperature: 16.6°C

15:00

Waves: 0.6 m

Current speed: 2.7 km/h

Water temperature: 16.7°C

21:00

Waves: 0.6 m

Current speed: 1.5 km/h

Water temperature: 16.6°C

03:00

Waves: 0.6 m

Current speed: 3.1 km/h

Water temperature: 16.4°C

09:00

Waves: 0.8 m

Current speed: 1.7 km/h

Water temperature: 16.3°C

15:00

Waves: 0.8 m

Current speed: 3.1 km/h

Water temperature: 16.3°C

21:00

Waves: 0.6 m

Current speed: 2.1 km/h

Water temperature: 16.3°C

03:00

Waves: 0.5 m

Current speed: 2.8 km/h

Water temperature: 16.2°C

09:00

Waves: 0.8 m

Current speed: 2.0 km/h

Water temperature: 16.1°C

Catalog depth7–30 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 18.7°

Jan6.5°

Feb5.8°

Mar6.3°

Apr8.5°

May11.5°

Jun14.6°

Jul17.2°

Aug18.7°

Sep17.7°

Oct15.0°

Nov11.6°

Dec8.5°

Current: moderate

Typical visibility: 8 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 Waterintermediate 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

Short snouted seahorse

Hippocampus hippocampus

DeepLog4

Common limpet

Patella vulgata

DeepLog3

Common periwinkle

Littorina littorea

DeepLog3

Peppery furrow shell

Scrobicularia plana

DeepLog3

Slipper limpet

Crepidula fornicata

DeepLog3

Black goby

Gobius niger

DeepLog2

Common edible cockle

Cerastoderma edule

DeepLog2

Japanese littleneck

Ruditapes philippinarum

DeepLog2

Plant sucking nudibranch

Elysia viridis

DeepLog2

Portuguese oyster

Magallana gigas

DeepLog2

Red-banded jellyfish

Chrysaora hysoscella

DeepLog2

Balthic macoma

Macoma balthica

DeepLog1

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

DeepLog + OBIS →

Photos