Somerset, United Kingdom
Celtic Sea51.20°N, 3.43°WStation UN-SOM-DUN

Dunster Beach Sea Water Temperature

A temperate beach on the Celtic Sea, warmest around August at about 18.2°C. Today's reading, 7-day forecast, and monthly averages below.

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Water Temperature NowBuoy & Sentinel-3 SST

Dunster Beach water temperature

17.2
63°FCool / Refreshing (16°C – 20°C)

Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.

+0°vs Sep avgCeltic Sea51.20°N, 3.43°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
19°C
65.7°F onshore
Wind Speed
12 km/h
Surface wind
Wave Height
0.8 m
Slight shore chop
Swell
0.6 m
Deep water swell
Wave Period
6 s
Peak interval
UV Index
—
Daily maximum
Sunrise
—
First morning light
Sunset
—
Golden hour close

7-Day Water Temperature Forecast

Open-Meteo ocean model
Today
WedSep 30
17.2°C
63°F
Waves: 1m
Refreshing
ThuOct 1
17.5°C
63.5°F
Waves: 0.9m
Refreshing
FriOct 2
17.6°C
63.7°F
Waves: 0.7m
Refreshing
SatOct 3
17.5°C
63.5°F
Waves: 0.6m
Refreshing
SunOct 4
17.2°C
63°F
Waves: 0.7m
Refreshing
MonOct 5
16.9°C
62.4°F
Waves: 0.9m
Refreshing
TueOct 6
16.8°C
62.2°F
Waves: 1m
Refreshing
Forecast cooling trend: -0.4°C over 7 days at Dunster Beach.
Confidence: High

Dunster Beach Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Dunster Beach occurs inJuly, August, September, October — peaking at18.2°C (64.8°F) in August.

Year-Round Water Temperature Curve (°C / °F)

Hover a bar for details
Current month Comfortable (20–24°C) Warm (24°C+) Cool (<20°C)
8
Jan
7
Feb
8
Mar
10
Apr
12
May
15
Jun
17
Jul
18
Aug
Current
17
Sep
15
Oct
12
Nov
9
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January6.1°C7.9°C9.6°CVery Cold (< 16°C)
February5.6°C7.3°C8.8°CVery Cold (< 16°C)
March5.9°C7.6°C9.2°CVery Cold (< 16°C)
April7.4°C9.5°C11.4°CVery Cold (< 16°C)
May10.1°C12.1°C15.2°CVery Cold (< 16°C)
June13.2°C15°C17.5°CVery Cold (< 16°C)
July15.5°C17.1°C19.5°CCool / Refreshing (16°C – 20°C)
August16.8°C18.2°C20.3°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent15.5°C17.2°C19.2°CCool / Refreshing (16°C – 20°C)
October13.1°C15.1°C17°CVery Cold (< 16°C)
November9.7°C12°C14.4°CVery Cold (< 16°C)
December7.6°C9.3°C10.9°CVery Cold (< 16°C)

Swimming FAQs for Dunster Beach

Is the sea warm enough to swim in Dunster Beach today?

Typical sea surface temperature in Dunster Beach this time of year is 17.2°C (63°F) — classified as Cool / Refreshing (16°C – 20°C). Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing. Live readings load automatically.

What are the warmest months for swimming in Dunster Beach?

The highest water temperatures in Dunster Beach typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Dunster Beach in September?

Historically in September, water temperatures in Dunster Beach average around17.2°C (63.0°F), fluctuating between a recorded minimum of 15.5°C and a maximum of 19.2°C.

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Dunster Beach Coastal Zone Map

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