Measurements:
°C
°F
Arcachon
72°F
E 9 mph
Feels like: 72°F
Precip: 35%
World Resorts France Arcachon Weather

Arcachon Sea Water Temperature

Current Sea Water Temperature:
+79.0°F
Maximum Sea Water Temperature in August: 80.6°F
Minimum Sea Water Temperature in August: 70.4°F
Average water temperature in August: 73.8°F

Sea Water Temperature for the Last 10 Days:

August 19 79.0°F August 14 79.4°F
August 18 78.4°F August 13 79.0°F
August 17 79.2°F August 12 78.4°F
August 16 80.6°F August 11 78.4°F
August 15 78.8°F August 10 79.8°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Arcachon was 78.5°F. The maximum and minimum values were 76.8°F and 80.6°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Arcachon was 76.4°F. The maximum and minimum values were 72.4°F and 78.8°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 80.1 °F
September 75.8 °F
Warmest sea temperature:
August 73.6 °F
July 72.4 °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 +84
Arcachon +72
Cannes +84
Corsica +84
Deauville +62
Etretat +68
Marseilles +84
Menton +84
Montpellier +84
Nice +80
Paris +72
Perpignan +88
Saint-Tropez +86
Toulon +84
Toulouse +86
24 Hours Weather Forecast
Arcachon
Local time: 19:59
19 aug, wednesday
2100 72°F
E
9 mph
20 aug, thursday
0000 74°F
E
9 mph
0300 74°F
E
8 mph
0600 72°F
E
8 mph
0900 72°F
S
9 mph
1200 70°F
SW
9 mph
1500 72°F
S
8 mph
1800 70°F
SE
12 mph