World Resorts Norway Trondheim Weather

Trondheim Sea Temperature in September

Average sea water temperature in September:
+54.9°F
Minimum sea water temperature in September: 60.1°F
Maximum sea water temperature in September: 50.0°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 56.0°F. The highest and lowest sea temperatures during the month were 59.4°F and 52.3°F.

Monthly sea water temperature in Trondheim, °F

Which Norway resorts have warmest sea in September?

Place name September 2025 September 2024
Holmenkollen 60.7°F 60.2°F
Oslo 60.7°F 60.3°F
Stavanger 60.0°F 59.6°F
Ålesund 57.5°F 57.3°F
Bergen 56.8°F 57.3°F
Trondheim 56.0°F 56.8°F
Tromse 50.4°F 53.3°F

Best time for vacation in Trondheim

Sunniest months:
July 8 days
May 8 days
August 8 days
Warmest months:
July 63.8 °F
August 62.1 °F
June 59.0 °F
Warmest sea temp:
July 59.5 °F
August 59.4 °F
September 54.9 °F
Coldest months:
January 26.7 °F
February 29.5 °F
December 29.7 °F
Rainiest months:
September 6 days
July 5 days
August 5 days
Windiest months:
January 8.3 mph
December 8.0 mph
March 7.9 mph

Trondheim on a weather map

Current weather
02:08
Trondheim
+36°F
SE 4 mph
Feels like: +32°F
Precip.: 100%
Places in Norway:
Name
°F
Bergen
+37°F
Lillehammer
+21°F
Ålesund
+39°F
Oslo
+32°F
Stavanger
+41°F
Tromse
+32°F
Trondheim
+36°F
Flam
+10°F
Hemsedal
+14°F
Holmenkollen
+34°F
24 Hours Forecast
Trondheim
Local time: 02:08
April 27, monday
0300
36°F
SE
4 mph
0600
36°F
E
3 mph
0900
37°F
E
4 mph
1200
39°F
E
4 mph
1500
41°F
SE
6 mph
1800
43°F
SE
4 mph
2100
39°F
SW
2 mph
April 28, tuesday
0000
37°F
W
4 mph
Units of measurement: °C / °F