United Kingdom

St Mary s Lighthouse

4–6 mMax Depth

shoreEntry

11Species

Conditions Summary

Model forecast · local time (GMT+1)

Model conditions signal62/100

Waves

1.9 m

6.9 s

Swell

1.8 m

6.2 s

Current speed

1.4 km/h

flowing toward NW

Water temperature

12.9°C

Wind

14.4 km/h

→ S

Sea level

-0.9 m

falling

WavesChallenging

SwellChallenging

Current speedCalm

Planning window

07:00–08:00

Calmest model window

Forecast Overview

TodayChallenging

Waves1.0–2.0 mCurrent speed1.4 km/h maxWater temperature12.9°C

TomorrowWatch

Waves0.4–1.0 mCurrent speed1.2 km/h maxWater temperature12.6°C

Fri, Oct 23Challenging

Waves0.5–1.4 mCurrent speed1.9 km/h maxWater temperature12.5°C

Sat, Oct 24Challenging

Waves1.1–1.2 mCurrent speed2.0 km/h maxWater temperature12.3°C

Next 72 hours

03:00

Waves: 2.0 m

Current speed: 1.4 km/h

Water temperature: 12.9°C

09:00

Waves: 1.6 m

Current speed: 0.5 km/h

Water temperature: 12.9°C

15:00

Waves: 1.3 m

Current speed: 0.7 km/h

Water temperature: 13.0°C

21:00

Waves: 1.1 m

Current speed: 0.5 km/h

Water temperature: 12.9°C

03:00

Waves: 0.9 m

Current speed: 0.4 km/h

Water temperature: 12.8°C

09:00

Waves: 0.7 m

Current speed: 0.5 km/h

Water temperature: 12.6°C

15:00

Waves: 0.5 m

Current speed: 0.0 km/h

Water temperature: 12.6°C

21:00

Waves: 0.5 m

Current speed: 0.0 km/h

Water temperature: 12.6°C

03:00

Waves: 0.8 m

Current speed: 0.6 km/h

Water temperature: 12.6°C

09:00

Waves: 1.4 m

Current speed: 0.2 km/h

Water temperature: 12.6°C

15:00

Waves: 1.2 m

Current speed: 1.0 km/h

Water temperature: 12.5°C

21:00

Waves: 1.1 m

Current speed: 0.5 km/h

Water temperature: 12.4°C

Catalog depth4–6 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-Sep

Peak month

Aug 14.5°

Jan7.4°

Feb6.6°

Mar6.4°

Apr7.3°

May9.3°

Jun11.7°

Jul14.0°

Aug14.5°

Sep13.2°

Oct11.6°

Nov10.3°

Dec8.8°

Current: mild

Typical visibility: 7.5 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

Red starfish

Asterias rubens

DeepLog5

Plum anemone

Actinia equina

DeepLog3

Transparent limpet

Patella pellucida

DeepLog3

Worm pipefish

Nerophis lumbriciformis

DeepLog3

Fifteen scaled worm

Harmothoe imbricata

DeepLog2

Atlantic gray seal

Halichoerus grypus

DeepLog1

Common periwinkle

Littorina littorea

DeepLog1

Fivebeard rockling

Ciliata mustela

DeepLog1

Northern dog whelk

Nucella lapillus

DeepLog1

Northern red anemone

Urticina felina

DeepLog1

Strawberry anemone

Actinia fragacea

DeepLog1

Bottlenose dolphin

Tursiops truncatus

Nearby OBIS observations20

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

DeepLog + OBIS →

Photos