Measurements:
°C
°F
Arcachon
70°F
NE 9 mph
Feels like: 70°F
Precip: 0%
World Resorts France Arcachon Weather

Arcachon Sea Water Temperature

Current Sea Water Temperature:
+72.4°F
Maximum Sea Water Temperature in May: 72.6°F
Minimum Sea Water Temperature in May: 55.2°F
Average water temperature in May: 61.9°F

Sea Water Temperature for the Last 10 Days:

May 30 72.4°F May 25 69.8°F
May 29 72.6°F May 24 68.8°F
May 28 71.4°F May 23 67.4°F
May 27 70.6°F May 22 66.2°F
May 26 70.2°F May 21 65.4°F

When is the Warmest Sea for Arcachon?

According to our data for the last three years for Arcachon the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Arcachon was 75.1°F. The maximum and minimum values were 73.6°F and 76.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Arcachon was 73.3°F. The maximum and minimum values were 70.4°F and 75.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Arcachon was 71.2°F. The maximum and minimum values were 67.4°F and 73.4°F respectively.

Best Time to Visit Arcachon
The most sunny months:
August 18 days
September 17 days
July 17 days
The most warm months:
August 80.6 °F
July 79.8 °F
September 75.8 °F
Warmest sea temperature:
August 73.6 °F
July 72.1 °F
September 70.9 °F
The most cold months:
January 50.5 °F
February 52.7 °F
December 53.8 °F
The most rainy months:
November 6 days
December 6 days
January 6 days
The most windy months:
January 10 mph
February 9 mph
December 9 mph

Arcachon on the Weather Map

France Resorts:
NAME
Antibes +80
Arcachon +70
Biarritz +68
Bordeaux +80
Cannes +80
Corsica +80
Etretat +66
Marseilles +82
Menton +76
Montpellier +82
Nice +80
Paris +88
Perpignan +84
Saint-Tropez +82
Toulouse +78
24 Hours Weather Forecast
Arcachon
Local time: 11:33
30 may, saturday
1200 70°F
NE
9 mph
1500 72°F
E
9 mph
1800 70°F
E
9 mph
2100 66°F
NE
9 mph
31 may, sunday
0000 66°F
E
11 mph
0300 64°F
E
10 mph
0600 62°F
E
9 mph
0900 66°F
E
9 mph