United Kingdom

HMV Altmark

10–20 mMax Depth

6Species

Conditions Summary

Model forecast · local time (GMT+1)

Model conditions signal91/100

Waves

0.8 m

12.3 s

Swell

0.7 m

10.9 s

Current speed

0.5 km/h

flowing toward NW

Water temperature

15.9°C

Wind

2.5 km/h

→ NE

Sea level

-1.8 m

falling

WavesWatch

SwellCalm

Current speedCalm

Planning window

06:30–06:00

Calmest model window

Forecast Overview

Tue, Oct 20Watch

Waves0.7–0.8 mCurrent speed1.3 km/h maxWater temperature15.9°C

TodayChallenging

Waves0.9–3.2 mCurrent speed2.1 km/h maxWater temperature15.7°C

TomorrowChallenging

Waves1.6–2.3 mCurrent speed2.1 km/h maxWater temperature15.6°C

Fri, Oct 23Challenging

Waves1.4–1.6 mCurrent speed1.3 km/h maxWater temperature15.5°C

Next 72 hours

06:00

Waves: 0.7 m

Current speed: 0.8 km/h

Water temperature: 15.9°C

12:00

Waves: 0.8 m

Current speed: 0.6 km/h

Water temperature: 15.9°C

18:00

Waves: 0.7 m

Current speed: 0.9 km/h

Water temperature: 15.9°C

00:00

Waves: 0.9 m

Current speed: 0.5 km/h

Water temperature: 15.8°C

06:00

Waves: 1.9 m

Current speed: 0.8 km/h

Water temperature: 15.7°C

12:00

Waves: 3.1 m

Current speed: 2.1 km/h

Water temperature: 15.7°C

18:00

Waves: 2.7 m

Current speed: 0.7 km/h

Water temperature: 15.7°C

00:00

Waves: 2.3 m

Current speed: 1.8 km/h

Water temperature: 15.7°C

06:00

Waves: 2.3 m

Current speed: 1.2 km/h

Water temperature: 15.6°C

12:00

Waves: 2.1 m

Current speed: 1.7 km/h

Water temperature: 15.6°C

18:00

Waves: 1.7 m

Current speed: 1.8 km/h

Water temperature: 15.6°C

00:00

Waves: 1.6 m

Current speed: 0.8 km/h

Water temperature: 15.5°C

Catalog depth10–20 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

Not available

Peak month

Aug 17.7°

Jan8.1°

Feb7.5°

Mar7.7°

Apr9.2°

May11.4°

Jun14.1°

Jul16.4°

Aug17.7°

Sep17.2°

Oct15.0°

Nov12.3°

Dec9.7°

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

wrecksalt 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

Moon jelly

Aurelia aurita

DeepLog2

Northern lugworm

Arenicola marina

DeepLog1

Northern star coral

Astrangia poculata

DeepLog1

Nursehound

Scyliorhinus stellaris

DeepLog1

Red starfish

Asterias rubens

DeepLog1

Starry smooth-hound

Mustelus asterias

DeepLog1

Centropages hamatus

Nearby OBIS observations21

Temora longicornis

Nearby OBIS observations12

Scyliorhinus canicula

Nearby OBIS observations11

Acartia (Acartiura) clausii

Nearby OBIS observations10

Acartia (Acanthacartia) bifilosa

Nearby OBIS observations9

Merlangius merlangus

Nearby OBIS observations9

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

DeepLog + OBIS →

Photos