Netherlands

Koepeltje

8–25 mMax Depth

boatEntry

2Species

Conditions Summary

Model forecast · local time (GMT+2)

Model conditions signal81/100

Waves

1.2 m

4.8 s

Swell

0.6 m

4.5 s

Current speed

0.9 km/h

flowing toward E

Water temperature

16.7°C

Wind

25.6 km/h

→ N

Sea level

-0.4 m

rising

WavesChallenging

SwellCalm

Current speedCalm

Forecast Overview

Sat, Oct 17Challenging

Waves1.2–1.7 mCurrent speed2.0 km/h maxWater temperature16.6°C

Sun, Oct 18Challenging

Waves0.9–1.8 mCurrent speed2.5 km/h maxWater temperature16.5°C

Mon, Oct 19Calm

Waves0.4–0.9 mCurrent speed2.7 km/h maxWater temperature16.5°C

Tue, Oct 20Watch

Waves0.5–0.6 mCurrent speed2.9 km/h maxWater temperature16.4°C

Next 72 hours

04:00

Waves: 1.2 m

Current speed: 0.9 km/h

Water temperature: 16.7°C

10:00

Waves: 1.3 m

Current speed: 1.5 km/h

Water temperature: 16.6°C

16:00

Waves: 1.4 m

Current speed: 1.1 km/h

Water temperature: 16.6°C

22:00

Waves: 1.7 m

Current speed: 1.5 km/h

Water temperature: 16.6°C

04:00

Waves: 1.6 m

Current speed: 0.6 km/h

Water temperature: 16.5°C

10:00

Waves: 1.5 m

Current speed: 1.6 km/h

Water temperature: 16.5°C

16:00

Waves: 1.2 m

Current speed: 0.4 km/h

Water temperature: 16.5°C

22:00

Waves: 0.9 m

Current speed: 1.3 km/h

Water temperature: 16.5°C

04:00

Waves: 0.7 m

Current speed: 0.3 km/h

Water temperature: 16.5°C

10:00

Waves: 0.5 m

Current speed: 0.9 km/h

Water temperature: 16.5°C

16:00

Waves: 0.4 m

Current speed: 0.7 km/h

Water temperature: 16.5°C

22:00

Waves: 0.5 m

Current speed: 0.2 km/h

Water temperature: 16.4°C

Catalog depth8–25 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

Apr-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

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

Atlantic bobtail

Sepiola atlantica

DeepLog2

Blue mussel

Mytilus edulis

DeepLog1

Larus argentatus

Nearby OBIS observations70

Larus fuscus

Nearby OBIS observations25

Ichthyaetus melanocephalus

Nearby OBIS observations8

Cerastoderma edule

Nearby OBIS observations6

Khakista

Nearby OBIS observations4

Kurtiella bidentata

Nearby OBIS observations4

Lanice conchilega

Nearby OBIS observations4

Abra alba

Nearby OBIS observations3

Actiniaria

Nearby OBIS observations3

Crassicorophium bonellii

Nearby OBIS observations3

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

DeepLog + OBIS →

Photos