United Kingdom

Mewstone Plymouth

20–30 mMax Depth

boatEntry

39Species

Conditions Summary

Model forecast · local time (GMT+1)

Model conditions signal91/100

Waves

0.5 m

4.8 s

Swell

0.4 m

4.5 s

Current speed

0.4 km/h

flowing toward SW

Water temperature

16.7°C

Wind

14.8 km/h

→ NE

Sea level

0.4 m

rising

WavesWatch

SwellCalm

Current speedCalm

Planning window

10:00–11:00

Calmest model window

Forecast Overview

Mon, Oct 19Challenging

Waves0.5–1.0 mCurrent speed0.8 km/h maxWater temperature16.7°C

Tue, Oct 20Calm

Waves0.3–1.1 mCurrent speed0.6 km/h maxWater temperature16.7°C

TodayChallenging

Waves1.2–2.2 mCurrent speed1.2 km/h maxWater temperature16.5°C

TomorrowChallenging

Waves1.6–2.5 mCurrent speed1.3 km/h maxWater temperature16.4°C

Next 72 hours

10:00

Waves: 0.5 m

Current speed: 0.4 km/h

Water temperature: 16.7°C

16:00

Waves: 1.0 m

Current speed: 0.5 km/h

Water temperature: 16.7°C

22:00

Waves: 0.8 m

Current speed: 0.8 km/h

Water temperature: 16.7°C

04:00

Waves: 0.5 m

Current speed: 0.3 km/h

Water temperature: 16.7°C

10:00

Waves: 0.3 m

Current speed: 0.5 km/h

Water temperature: 16.7°C

16:00

Waves: 0.4 m

Current speed: 0.6 km/h

Water temperature: 16.7°C

22:00

Waves: 1.0 m

Current speed: 0.6 km/h

Water temperature: 16.6°C

04:00

Waves: 1.5 m

Current speed: 1.1 km/h

Water temperature: 16.6°C

10:00

Waves: 2.0 m

Current speed: 0.4 km/h

Water temperature: 16.5°C

16:00

Waves: 1.9 m

Current speed: 1.2 km/h

Water temperature: 16.5°C

22:00

Waves: 2.1 m

Current speed: 0.2 km/h

Water temperature: 16.5°C

04:00

Waves: 2.2 m

Current speed: 1.3 km/h

Water temperature: 16.4°C

Catalog depth20–30 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-Sep

Peak month

Aug 16.9°

Jan10.4°

Feb9.7°

Mar9.4°

Apr10.2°

May11.9°

Jun14.3°

Jul16.2°

Aug16.9°

Sep16.0°

Oct14.8°

Nov13.3°

Dec11.7°

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 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

DeepLog12

Common brittle star

Ophiothrix fragilis

DeepLog9

Yellow plumed sea slug

Berthella plumula

DeepLog8

Snakelocks anemone

Anemonia viridis

DeepLog7

Strawberry anemone

Actinia fragacea

DeepLog7

Transparent limpet

Patella pellucida

DeepLog6

Worm pipefish

Nerophis lumbriciformis

DeepLog6

Candelabrum cocksii

DeepLog5

Cornish sucker

Lepadogaster purpurea

DeepLog4

Psammechinus miliaris

DeepLog4

Eulalia clavigera

DeepLog3

Montagu's blenny

Coryphoblennius galerita

DeepLog3

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

DeepLog + OBIS →

Photos