Landes, France
Cantabrian Sea43.78°N, 1.40°WStation FR-LAN-PLA

Plage du Lac Sea Water Temperature

A temperate beach on the Cantabrian Sea, warmest around August at about 22°C. Today's reading, 7-day forecast, and monthly averages below.

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

Plage du Lac water temperature

20.9
69.6°FComfortable (20°C – 24°C)

Pleasant and revitalizing. Great for most beachgoers and active recreational swimming.

+0°vs Sep avgCantabrian Sea43.78°N, 1.40°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
22°C
72.3°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
20.9°C
69.6°F
Waves: 1m
Comfortable
ThuOct 1
21.2°C
70.2°F
Waves: 0.9m
Comfortable
FriOct 2
21.3°C
70.3°F
Waves: 0.7m
Comfortable
SatOct 3
21.2°C
70.2°F
Waves: 0.6m
Comfortable
SunOct 4
20.9°C
69.6°F
Waves: 0.7m
Comfortable
MonOct 5
20.6°C
69.1°F
Waves: 0.9m
Comfortable
TueOct 6
20.5°C
68.9°F
Waves: 1m
Comfortable
Forecast cooling trend: -0.4°C over 7 days at Plage du Lac.
Confidence: High

Plage du Lac Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Plage du Lac occurs inJune, July, August, September — peaking at22°C (71.6°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)
12
Jan
12
Feb
12
Mar
14
Apr
16
May
19
Jun
22
Jul
22
Aug
Current
21
Sep
19
Oct
16
Nov
14
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January3.3°C12.4°C14.9°CVery Cold (< 16°C)
February10.5°C11.8°C13.2°CVery Cold (< 16°C)
March10.6°C12.2°C14.3°CVery Cold (< 16°C)
April11.8°C13.7°C17.9°CVery Cold (< 16°C)
May13.3°C16.1°C19.8°CCool / Refreshing (16°C – 20°C)
June16.3°C19.2°C21.4°CCool / Refreshing (16°C – 20°C)
July18.3°C21.5°C24.1°CComfortable (20°C – 24°C)
August20.2°C22°C25.1°CComfortable (20°C – 24°C)
SeptemberCurrent18.4°C20.9°C23°CComfortable (20°C – 24°C)
October16.3°C18.7°C22.7°CCool / Refreshing (16°C – 20°C)
November13.4°C15.8°C17.8°CVery Cold (< 16°C)
December12.3°C14°C15.6°CVery Cold (< 16°C)

Swimming FAQs for Plage du Lac

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

Typical sea surface temperature in Plage du Lac this time of year is 20.9°C (69.6°F) — classified as Comfortable (20°C – 24°C). Pleasant and revitalizing. Great for most beachgoers and active recreational swimming. Live readings load automatically.

What are the warmest months for swimming in Plage du Lac?

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

What is the typical water temperature in Plage du Lac in September?

Historically in September, water temperatures in Plage du Lac average around20.9°C (69.6°F), fluctuating between a recorded minimum of 18.4°C and a maximum of 23°C.

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