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Oslo weather in September

Weather in Oslo: September

Average day temperature: 58.1°F
Average night temperature: 48.1°F
Sea water temperature: 59.7°F
Number of sunny days: 9 days
Day length: 11.5 - 14.1 hours
Number of rainy days: 5 days
Precipitation totals: 3.0 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 73°F. At the same time the lowest night temperature was 34°F. Day and night temperature averages during September were 61.0°F and 47.7°F.

Sea water temperature in Oslo in September, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
51
54
57
60
63
66
69
72

The average sea water temperature in September of 2024 was 60.3°F. The highest and lowest sea temperatures during the month were 64.2°F and 56.7°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
23%
29%
48%

Mostly all days in September are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in September, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.6
1.2
1.8
2.4
2.9
3.5
4.1
2.7
3.3
3.4
3.3
3.4
3.3
3.1
1.7
1.7
1.8
1.9
2.7
3.3
3.4
3.4
3.3
3.4
3.3
3.1
1.7
1.7
1.8
1.9

Precipitation total value in Oslo in September is 3.4 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
1.0
2.0
3.0
4.0
4.9
5.9
6.9
4.5
5.2
5.5
5.5
5.1
5.8
5.7
5.8
5.2
5.3
5.2
4.5
5.2
5.5
5.5
5.5
5.1
5.8
5.7
5.8
5.2
5.3
5.2

The average wind speed value in September is 5.5 mph

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.8
3.6
5.4
7.2
9.0
10.8
12.6
2.3
2.6
4.1
7.1
8.4
10.5
8.9
6.8
5.4
4.1
3.0
2.3
2.6
4.1
5.9
7.1
8.4
10.5
8.9
6.8
5.4
4.1
3.0

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: 5.9.

Best time for vacation in Oslo

Sunniest months:
July 11 days
May 11 days
June 11 days
Warmest months:
July 68.0 °F
August 65.2 °F
June 64.6 °F
Warmest sea temp:
July 65.5 °F
August 65.1 °F
June 60.5 °F
Coldest months:
January 25.0 °F
December 28.5 °F
February 28.8 °F
Rainiest months:
August 7 days
May 6 days
June 6 days
Windiest months:
May 6.3 mph
April 6.1 mph
June 6.0 mph

Oslo on a weather map

Leaflet | Tiles © Esri
Places in Norway:
Name
°F
+34°F
-2°F
+16°F
+23°F
+39°F
+27°F
+30°F
+3°F
+7°F
+23°F
24 Hours Forecast
Oslo
Local time: 22:33
March 17, monday
0000
21°F
SE
4 mph
0300
21°F
SE
3 mph
0600
21°F
SE
1 mph
0900
28°F
E
2 mph
1200
36°F
E
2 mph
1500
37°F
E
4 mph
1800
30°F
E
2 mph
2100
28°F
SE
2 mph
Units of measurement: °C / °F