Loire-Atlantique, France
Cantabrian Sea47.30°N, 2.53°WStation FR-LOI-PLA

Plage de Saint-Goustan Sea Water Temperature

A temperate beach on the Cantabrian Sea, warmest around August at about 18.3°C. Today's reading, 7-day forecast, and monthly averages below.

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Water Temperature NowBuoy & Sentinel-3 SST

Plage de Saint-Goustan water temperature

17.4
63.3°FCool / Refreshing (16°C – 20°C)

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

+0°vs Sep avgCantabrian Sea47.30°N, 2.53°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
19°C
66°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
17.4°C
63.3°F
Waves: 1m
Refreshing
ThuOct 1
17.7°C
63.9°F
Waves: 0.9m
Refreshing
FriOct 2
17.8°C
64°F
Waves: 0.7m
Refreshing
SatOct 3
17.7°C
63.9°F
Waves: 0.6m
Refreshing
SunOct 4
17.4°C
63.3°F
Waves: 0.7m
Refreshing
MonOct 5
17.1°C
62.8°F
Waves: 0.9m
Refreshing
TueOct 6
17°C
62.6°F
Waves: 1m
Refreshing
Forecast cooling trend: -0.4°C over 7 days at Plage de Saint-Goustan.
Confidence: High

Plage de Saint-Goustan Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Plage de Saint-Goustan occurs inJune, July, August, September — peaking at18.3°C (64.9°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)
10
Jan
9
Feb
10
Mar
12
Apr
14
May
17
Jun
18
Jul
18
Aug
Current
17
Sep
16
Oct
14
Nov
11
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January6.2°C9.7°C11.8°CVery Cold (< 16°C)
February7.4°C9.2°C11.1°CVery Cold (< 16°C)
March7.3°C9.8°C11.6°CVery Cold (< 16°C)
April10°C11.9°C15°CVery Cold (< 16°C)
May11.8°C14.4°C17.5°CVery Cold (< 16°C)
June15°C16.5°C18°CCool / Refreshing (16°C – 20°C)
July14.6°C18°C21°CCool / Refreshing (16°C – 20°C)
August16.8°C18.3°C21.5°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent14.9°C17.4°C19.5°CCool / Refreshing (16°C – 20°C)
October14.4°C16.1°C19°CCool / Refreshing (16°C – 20°C)
November11.5°C13.7°C15.9°CVery Cold (< 16°C)
December10°C11.3°C12.8°CVery Cold (< 16°C)

Swimming FAQs for Plage de Saint-Goustan

Is the sea warm enough to swim in Plage de Saint-Goustan today?

Typical sea surface temperature in Plage de Saint-Goustan this time of year is 17.4°C (63.3°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 Plage de Saint-Goustan?

The highest water temperatures in Plage de Saint-Goustan typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Plage de Saint-Goustan in September?

Historically in September, water temperatures in Plage de Saint-Goustan average around17.4°C (63.3°F), fluctuating between a recorded minimum of 14.9°C and a maximum of 19.5°C.

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Plage de Saint-Goustan Coastal Zone Map

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