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Rennes weather in September

Weather in Rennes: September

Average day temperature: 69.5°F
Average night temperature: 54.7°F
Sea water temperature: 64.8°F
Number of sunny days: 11 days
Day length: 11.7 - 13.4 hours
Number of rainy days: 1 day
Precipitation totals: 1.0 in.

Air temperature in September, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
12
24
36
48
60
72
84
96
Day temperature   
Night temperature

The highest day temperature during September of 2024 was 75°F. At the same time the lowest night temperature was 43°F. Day and night temperature averages during September were 65.1°F and 53.4°F.

Sea water temperature in Rennes in September, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
58
60
62
64
66
68
70
72

The average sea water temperature in September of 2024 was 64.8°F. The highest and lowest sea temperatures during the month were 66.4°F and 63.0°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
33%
33%
33%

Number of sunny, partly cloudy and cloudy days in September is almost equal.

Precipitation total in September, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.5
1.0
1.4
1.9
2.4
2.9
3.3
3.8
1.6
1.7
1.9
1.3
1.1
2.8
1.8
1.8
1.5
1.4
1.6
1.6
1.7
1.9
1.3
1.1
2.8
1.8
1.8
1.5
1.4
1.6

Precipitation total value in Rennes in September is 1.0 in. Other months of the year show relatively similar values.

Wind speed in September, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.9
3.8
5.8
7.7
9.6
11.5
13.4
10.6
10.0
9.3
8.5
8.6
8.1
9.2
9.2
11.0
11.2
10.2
10.6
10.0
9.3
8.7
8.5
8.6
8.1
9.2
9.2
11.0
11.2
10.2

The average wind speed value in September is 8.7 mph It makes September one of the least windy months of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.5
3.0
4.5
6.0
7.5
9.0
10.5
3.3
4.4
5.7
8.6
8.8
8.5
7.3
6.9
5.3
4.2
3.5
3.3
4.4
5.7
7.0
8.6
8.8
8.5
7.3
6.9
5.3
4.2
3.5

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 7.0.

Best time for vacation in Rennes

Sunniest months:
July 12 days
August 12 days
September 11 days
Warmest months:
August 73.7 °F
July 73.6 °F
September 69.5 °F
Warmest sea temp:
August 65.8 °F
September 64.8 °F
July 64.1 °F
Coldest months:
January 46.2 °F
February 48.0 °F
December 48.6 °F
Rainiest months:
June 5 days
November 4 days
April 4 days
Windiest months:
February 11.2 mph
December 10.8 mph
March 10.5 mph

Rennes on a weather map

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Places in France:
Name
°F
+37°F
+52°F
+50°F
+48°F
+54°F
+54°F
+55°F
+55°F
+48°F
+52°F
+50°F
+54°F
+45°F
+25°F
+52°F
24 Hours Forecast
Rennes
Local time: 05:53
February 24, monday
0600
52°F
N
21 mph
0900
52°F
NE
24 mph
1200
54°F
NE
10 mph
1500
57°F
E
12 mph
1800
52°F
NE
12 mph
2100
46°F
NE
8 mph
February 25, tuesday
0000
45°F
NE
7 mph
0300
43°F
NW
4 mph
Units of measurement: °C / °F