United Kingdom

Big Harcar

10–15 mMax Depth

boatEntry

1Species

Conditions Summary

Model forecast · local time (GMT+1)

Model conditions signal71/100

Waves

2.1 m

6.3 s

Swell

1.2 m

6.5 s

Current speed

1.5 km/h

flowing toward NW

Water temperature

12.8°C

Wind

36.4 km/h

→ SE

Sea level

-0.5 m

falling

WavesChallenging

SwellWatch

Current speedCalm

Planning window

06:00–07:00

Calmest model window

Forecast Overview

Tue, Oct 20Challenging

Waves2.1–2.3 mCurrent speed1.9 km/h maxWater temperature12.7°C

TodayChallenging

Waves1.1–2.0 mCurrent speed2.3 km/h maxWater temperature12.7°C

TomorrowWatch

Waves0.3–1.1 mCurrent speed2.1 km/h maxWater temperature12.6°C

Fri, Oct 23Challenging

Waves0.4–1.5 mCurrent speed2.6 km/h maxWater temperature12.5°C

Next 72 hours

14:00

Waves: 2.1 m

Current speed: 1.5 km/h

Water temperature: 12.8°C

20:00

Waves: 2.2 m

Current speed: 0.5 km/h

Water temperature: 12.7°C

02:00

Waves: 1.9 m

Current speed: 1.3 km/h

Water temperature: 12.7°C

08:00

Waves: 2.0 m

Current speed: 0.2 km/h

Water temperature: 12.7°C

14:00

Waves: 1.7 m

Current speed: 0.2 km/h

Water temperature: 12.7°C

20:00

Waves: 1.3 m

Current speed: 0.4 km/h

Water temperature: 12.7°C

02:00

Waves: 1.0 m

Current speed: 0.5 km/h

Water temperature: 12.6°C

08:00

Waves: 0.7 m

Current speed: 0.4 km/h

Water temperature: 12.6°C

14:00

Waves: 0.5 m

Current speed: 1.0 km/h

Water temperature: 12.6°C

20:00

Waves: 0.4 m

Current speed: 0.8 km/h

Water temperature: 12.6°C

02:00

Waves: 0.6 m

Current speed: 0.4 km/h

Water temperature: 12.5°C

08:00

Waves: 1.3 m

Current speed: 1.5 km/h

Water temperature: 12.5°C

Catalog depth10–15 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-Oct

Peak month

Aug 14.5°

Jan7.4°

Feb6.5°

Mar6.4°

Apr7.2°

May9.1°

Jun11.6°

Jul13.9°

Aug14.5°

Sep13.0°

Oct11.6°

Nov10.4°

Dec8.8°

Current: moderate

Typical visibility: 20 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

Moon jelly

Aurelia aurita

DeepLog1

Atlantic gray seal

Halichoerus grypus

Nearby OBIS observations51

Northern gannet

Morus bassanus

Nearby OBIS observations12

Black-legged kittiwake

Rissa tridactyla

Nearby OBIS observations9

Atlantic puffin

Fratercula arctica

Nearby OBIS observations6

Common murre

Uria aalge

Nearby OBIS observations5

Echinus esculentus

Nearby OBIS observations5

Somateria mollissima

Nearby OBIS observations5

Asterias rubens

Nearby OBIS observations4

Acartia

Nearby OBIS observations3

Botryllus schlosseri

Nearby OBIS observations3

Buccinum undatum

Nearby OBIS observations3

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

DeepLog + OBIS →