Loire-Atlantique, France
Cantabrian Sea47.24°N, 2.29°WStation FR-LOI-PLA

Plage du Grand Traict Sea Water Temperature

A temperate beach on the Cantabrian Sea, warmest around August at about 18.6°C. Today's reading, 7-day forecast, and monthly averages below.

Live readings · auto-updating
Water Temperature NowBuoy & Sentinel-3 SST

Plage du Grand Traict water temperature

17.6
63.7°FCool / Refreshing (16°C – 20°C)

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

+0°vs Sep avgCantabrian Sea47.24°N, 2.29°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
19°C
66.4°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
17.6°C
63.7°F
Waves: 1m
Refreshing
ThuOct 1
17.9°C
64.2°F
Waves: 0.9m
Refreshing
FriOct 2
18°C
64.4°F
Waves: 0.7m
Refreshing
SatOct 3
17.9°C
64.2°F
Waves: 0.6m
Refreshing
SunOct 4
17.6°C
63.7°F
Waves: 0.7m
Refreshing
MonOct 5
17.3°C
63.1°F
Waves: 0.9m
Refreshing
TueOct 6
17.2°C
63°F
Waves: 1m
Refreshing
Forecast cooling trend: -0.4°C over 7 days at Plage du Grand Traict.
Confidence: High

Plage du Grand Traict Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Plage du Grand Traict occurs inJune, July, August, September — peaking at18.6°C (65.5°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)
10
Jan
9
Feb
10
Mar
12
Apr
15
May
17
Jun
18
Jul
19
Aug
Current
18
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
January7.3°C9.7°C12.1°CVery Cold (< 16°C)
February7.5°C9.1°C10.7°CVery Cold (< 16°C)
March7.6°C9.8°C11.5°CVery Cold (< 16°C)
April10.2°C12°C15.2°CVery Cold (< 16°C)
May11.5°C14.5°C18°CVery Cold (< 16°C)
June14.9°C16.7°C18.3°CCool / Refreshing (16°C – 20°C)
July15.1°C18.3°C21.5°CCool / Refreshing (16°C – 20°C)
August16.8°C18.6°C22.2°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent15.5°C17.6°C19.7°CCool / Refreshing (16°C – 20°C)
October14.6°C16.3°C19.7°CCool / Refreshing (16°C – 20°C)
November11.5°C13.8°C16.3°CVery Cold (< 16°C)
December9.6°C11.2°C12.9°CVery Cold (< 16°C)

Swimming FAQs for Plage du Grand Traict

Is the sea warm enough to swim in Plage du Grand Traict today?

Typical sea surface temperature in Plage du Grand Traict this time of year is 17.6°C (63.7°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 du Grand Traict?

The highest water temperatures in Plage du Grand Traict typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Plage du Grand Traict in September?

Historically in September, water temperatures in Plage du Grand Traict average around17.6°C (63.7°F), fluctuating between a recorded minimum of 15.5°C and a maximum of 19.7°C.

Other Beaches in France

Explore all France stations

Plage du Grand Traict Coastal Zone Map

Live OpenStreetMap