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Trondheim weather in September

Weather in Trondheim: September

Average day temperature: 55.9°F
Average night temperature: 46.7°F
Sea water temperature: 54.9°F
Number of sunny days: 8 days
Day length: 11.5 - 14.5 hours
Number of rainy days: 6 days
Precipitation totals: 3.2 in.

Air temperature in September, °F

Show year:
2024
2023
2022

The highest day temperature during September of 2024 was 68°F. At the same time the lowest night temperature was 37°F. Day and night temperature averages during September were 54.6°F and 49.0°F.

Sea water temperature in Trondheim in September, °F

Show year:
2024
2023
2022

The average sea water temperature in September of 2024 was 56.8°F. The highest and lowest sea temperatures during the month were 60.1°F and 52.7°F.

Sunny, partly cloudy and cloudy days

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

Precipitation total in September, in.

Precipitation total value in Trondheim in September is 3.5 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 6.7 mph

Average sunny hours

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: 5.5.

Best time for vacation in Trondheim

Sunniest months:
August 9 days
November 9 days
May 9 days
Warmest months:
July 63.7 °F
August 62.3 °F
June 59.3 °F
Warmest sea temp:
August 59.4 °F
July 59.2 °F
September 54.9 °F
Coldest months:
January 27.0 °F
December 29.0 °F
February 29.7 °F
Rainiest months:
July 6 days
September 6 days
March 5 days
Windiest months:
January 8.2 mph
March 7.8 mph
December 7.8 mph

Trondheim on a weather map

Trondheim
+21°F
SW 2 mph
Feels like: +18°F
Precip.: 0%
Places in Norway:
Name
°F
+30°F
+21°F
+34°F
+25°F
+37°F
+16°F
+19°F
+3°F
+9°F
+23°F
24 Hours Forecast
Trondheim
Local time: 16:34
November 21, thursday
1800
19°F
NE
3 mph
2100
19°F
NE
5 mph
November 22, friday
0000
19°F
N
4 mph
0300
21°F
NE
4 mph
0600
23°F
E
4 mph
0900
23°F
NE
5 mph
1200
25°F
NE
9 mph
1500
28°F
NE
9 mph
Units of measurement: °C / °F