Vendée, France
Cantabrian Sea46.49°N, 1.78°WStation FR-VEN-GRA

Grande Plage des Sables d'Olonne Sea Water Temperature

A temperate beach on the Cantabrian Sea, warmest around August at about 19.7°C. Today's reading, 7-day forecast, and monthly averages below.

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Water Temperature NowBuoy & Sentinel-3 SST

Grande Plage des Sables d'Olonne water temperature

18.8
65.8°FCool / Refreshing (16°C – 20°C)

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

+0°vs Sep avgCantabrian Sea46.49°N, 1.78°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
20°C
68.5°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
18.8°C
65.8°F
Waves: 1m
Refreshing
ThuOct 1
19.1°C
66.4°F
Waves: 0.9m
Refreshing
FriOct 2
19.2°C
66.6°F
Waves: 0.7m
Refreshing
SatOct 3
19.1°C
66.4°F
Waves: 0.6m
Refreshing
SunOct 4
18.8°C
65.8°F
Waves: 0.7m
Refreshing
MonOct 5
18.5°C
65.3°F
Waves: 0.9m
Refreshing
TueOct 6
18.4°C
65.1°F
Waves: 1m
Refreshing
Forecast cooling trend: -0.4°C over 7 days at Grande Plage des Sables d'Olonne.
Confidence: High

Grande Plage des Sables d'Olonne Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Grande Plage des Sables d'Olonne occurs inJune, July, August, September — peaking at19.7°C (67.5°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
12
Apr
15
May
17
Jun
19
Jul
20
Aug
Current
19
Sep
17
Oct
15
Nov
12
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January9°C10.6°C13°CVery Cold (< 16°C)
February8.7°C9.8°C11.1°CVery Cold (< 16°C)
March8.2°C10.3°C11.8°CVery Cold (< 16°C)
April10.6°C12.2°C15.6°CVery Cold (< 16°C)
May12.4°C14.8°C18.6°CVery Cold (< 16°C)
June14.6°C17.3°C19.5°CCool / Refreshing (16°C – 20°C)
July16.9°C19.3°C22.7°CCool / Refreshing (16°C – 20°C)
August17.8°C19.7°C23.7°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent16.2°C18.8°C20.6°CCool / Refreshing (16°C – 20°C)
October15.3°C17.3°C21.1°CCool / Refreshing (16°C – 20°C)
November12°C14.5°C17.4°CVery Cold (< 16°C)
December10°C12.1°C14.1°CVery Cold (< 16°C)

Swimming FAQs for Grande Plage des Sables d'Olonne

Is the sea warm enough to swim in Grande Plage des Sables d'Olonne today?

Typical sea surface temperature in Grande Plage des Sables d'Olonne this time of year is 18.8°C (65.8°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 des Sables d'Olonne?

The highest water temperatures in Grande Plage des Sables d'Olonne typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Grande Plage des Sables d'Olonne in September?

Historically in September, water temperatures in Grande Plage des Sables d'Olonne average around18.8°C (65.8°F), fluctuating between a recorded minimum of 16.2°C and a maximum of 20.6°C.

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