World Resorts France Rennes Weather

Rennes Sea Temperature in August

Average sea water temperature in August:
+65.9°F
Minimum sea water temperature in August: 68.7°F
Maximum sea water temperature in August: 63.1°F

Daily sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 67.3°F. The highest and lowest sea temperatures during the month were 68.2°F and 65.7°F.

Monthly sea water temperature in Rennes, °F

Which France resorts have warmest sea in August?

Place name August 2025 August 2024
Portivecju 79.5°F 82.2°F
Bastia 79.4°F 82.7°F
Saint Jean Cap Ferrat 78.8°F 81.9°F
Roquebrune Cap Martin 78.7°F 81.5°F
Menton 78.6°F 81.4°F
Nice 78.6°F 81.6°F
Theoule Sur Mer 78.5°F 81.4°F
Mandelieu la Napoule 78.5°F 81.4°F
Cannes 78.5°F 81.5°F
Calvi 78.4°F 80.8°F
Golfe Juan 78.4°F 81.4°F
Bunifaziu 78.4°F 80.3°F
Antibes 78.4°F 81.4°F
Juan les Pins 78.4°F 81.4°F
Saint Laurent du Var 78.3°F 81.2°F
Cagnes sur Mer 78.2°F 81.1°F
Frejus 78.1°F 80.7°F
Aiacciu 78.0°F 80.3°F
Saint-Tropez 77.9°F 80.6°F
Sainte Maxime 77.9°F 80.5°F

Best time for vacation in Rennes

Sunniest months:
August 12 days
July 12 days
September 11 days
Warmest months:
August 74.1 °F
July 73.9 °F
June 69.7 °F
Warmest sea temp:
August 65.9 °F
September 64.8 °F
July 64.2 °F
Coldest months:
January 46.2 °F
February 48.0 °F
December 48.6 °F
Rainiest months:
June 5 days
April 4 days
November 3 days
Windiest months:
February 11.0 mph
December 10.8 mph
March 10.4 mph

Rennes on a weather map

Rennes
+39°F
N 7 mph
Feels like: +34°F
Precip.: 0%
Places in France:
Name
°F
+50°F
+50°F
+46°F
+45°F
+46°F
+52°F
+46°F
+52°F
+46°F
+46°F
+37°F
+45°F
+48°F
+43°F
+43°F
24 Hours Forecast
Rennes
Local time: 07:51
December 05, friday
0900
39°F
N
7 mph
1200
46°F
N
14 mph
1500
45°F
NW
19 mph
1800
50°F
N
22 mph
2100
54°F
NE
12 mph
December 06, saturday
0000
50°F
NE
15 mph
0300
52°F
NE
17 mph
0600
52°F
NE
18 mph
Units of measurement: °C / °F