United Kingdom

Menai Straights

7–13 mMax Depth

boatEntry

50Species

Conditions Summary

Model forecast · local time (GMT+1)

Model conditions signal100/100

Waves

0.2 m

5.3 s

Swell

0.1 m

3.4 s

Current speed

0.0 km/h

flowing toward E

Water temperature

13.9°C

Wind

6.5 km/h

→ S

Sea level

0.3 m

rising

WavesCalm

SwellCalm

Current speedCalm

Planning window

16:00–17:00

Calmest model window

Forecast Overview

Tue, Oct 20Calm

Waves0.2–0.2 mCurrent speed0.3 km/h maxWater temperature13.9°C

TodayChallenging

Waves0.2–1.4 mCurrent speed1.0 km/h maxWater temperature13.6°C

TomorrowWatch

Waves0.5–0.7 mCurrent speed0.5 km/h maxWater temperature13.3°C

Fri, Oct 23Watch

Waves0.4–2.2 mCurrent speed1.2 km/h maxWater temperature13.1°C

Next 72 hours

16:00

Waves: 0.2 m

Current speed: 0.0 km/h

Water temperature: 13.9°C

22:00

Waves: 0.2 m

Current speed: 0.3 km/h

Water temperature: 13.9°C

04:00

Waves: 0.4 m

Current speed: 0.3 km/h

Water temperature: 13.7°C

10:00

Waves: 1.1 m

Current speed: 0.2 km/h

Water temperature: 13.7°C

16:00

Waves: 1.2 m

Current speed: 1.0 km/h

Water temperature: 13.6°C

22:00

Waves: 0.8 m

Current speed: 0.5 km/h

Water temperature: 13.4°C

04:00

Waves: 0.6 m

Current speed: 0.2 km/h

Water temperature: 13.3°C

10:00

Waves: 0.7 m

Current speed: 0.3 km/h

Water temperature: 13.2°C

16:00

Waves: 0.6 m

Current speed: 0.4 km/h

Water temperature: 13.3°C

22:00

Waves: 0.5 m

Current speed: 0.4 km/h

Water temperature: 13.2°C

04:00

Waves: 0.5 m

Current speed: 0.2 km/h

Water temperature: 13.1°C

10:00

Waves: 1.0 m

Current speed: 1.0 km/h

Water temperature: 13.0°C

Catalog depth7–13 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 15.6°

Jan8.1°

Feb7.4°

Mar7.3°

Apr8.4°

May10.2°

Jun12.5°

Jul14.5°

Aug15.6°

Sep15.4°

Oct14.0°

Nov11.8°

Dec9.8°

Current: strong

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

Loading…

Dive Types

driftsalt 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

Sea star

Asterina gibbosa

DeepLog17

Violet sea slug

Edmundsella pedata

DeepLog10

Northern dog whelk

Nucella lapillus

DeepLog9

Rock gunnel

Pholis gunnellus

DeepLog9

Spotted cowrie

Trivia monacha

DeepLog9

Shan

Lipophrys pholis

DeepLog8

Red starfish

Asterias rubens

DeepLog7

Nudibranch

Aeolidiella glauca

DeepLog6

Common brittle star

Ophiothrix fragilis

DeepLog5

Plant sucking nudibranch

Elysia viridis

DeepLog5

Janolus hyalinus

DeepLog4

Plum anemone

Actinia equina

DeepLog4

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

DeepLog + OBIS →

Photos