Finistère, France
Celtic Sea48.71°N, 3.81°WStation FR-FIN-GRA

Grande plage de Primel-Tregastel Sea Water Temperature

A temperate beach on the Celtic Sea, warmest around August at about 16.3°C. Today's reading, 7-day forecast, and monthly averages below.

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Grande plage de Primel-Tregastel water temperature

16
60.8°FCool / Refreshing (16°C – 20°C)

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

+0°vs Sep avgCeltic Sea48.71°N, 3.81°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
18°C
63.5°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
16°C
60.8°F
Waves: 1m
Refreshing
ThuOct 1
16.3°C
61.3°F
Waves: 0.9m
Refreshing
FriOct 2
16.4°C
61.5°F
Waves: 0.7m
Refreshing
SatOct 3
16.3°C
61.3°F
Waves: 0.6m
Refreshing
SunOct 4
16°C
60.8°F
Waves: 0.7m
Refreshing
MonOct 5
15.7°C
60.3°F
Waves: 0.9m
Very Cold
TueOct 6
15.6°C
60.1°F
Waves: 1m
Very Cold
Forecast cooling trend: -0.4°C over 7 days at Grande plage de Primel-Tregastel.
Confidence: High

Grande plage de Primel-Tregastel Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Grande plage de Primel-Tregastel occurs inJuly, August, September, October — peaking at16.3°C (61.3°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)
11
Jan
10
Feb
10
Mar
11
Apr
12
May
14
Jun
16
Jul
16
Aug
Current
16
Sep
15
Oct
14
Nov
12
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January9.6°C11°C12.3°CVery Cold (< 16°C)
February9.1°C10.3°C11.4°CVery Cold (< 16°C)
March9.1°C10.1°C11.4°CVery Cold (< 16°C)
April9.2°C10.7°C11.9°CVery Cold (< 16°C)
May10.6°C12.1°C14°CVery Cold (< 16°C)
June12.1°C13.8°C15.3°CVery Cold (< 16°C)
July13.6°C15.5°C17.7°CVery Cold (< 16°C)
August15.3°C16.3°C18°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent15°C16°C17.4°CCool / Refreshing (16°C – 20°C)
October13.8°C15.1°C16.1°CVery Cold (< 16°C)
November11.4°C13.6°C14.6°CVery Cold (< 16°C)
December11.1°C12.3°C13.5°CVery Cold (< 16°C)

Swimming FAQs for Grande plage de Primel-Tregastel

Is the sea warm enough to swim in Grande plage de Primel-Tregastel today?

Typical sea surface temperature in Grande plage de Primel-Tregastel this time of year is 16°C (60.8°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 Grande plage de Primel-Tregastel?

The highest water temperatures in Grande plage de Primel-Tregastel typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Grande plage de Primel-Tregastel in September?

Historically in September, water temperatures in Grande plage de Primel-Tregastel average around16°C (60.8°F), fluctuating between a recorded minimum of 15°C and a maximum of 17.4°C.

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Grande plage de Primel-Tregastel Coastal Zone Map

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