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 58.8 °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
19:11
Trondheim
+64°F
E 6 mph
Feels like: +64°F
Precip.: 10%
Places in Norway:
Name
°F
Bergen
+64°F
Lillehammer
+84°F
Ålesund
+57°F
Oslo
+84°F
Stavanger
+61°F
Tromse
+54°F
Trondheim
+64°F
Flam
+73°F
Hemsedal
+77°F
Holmenkollen
+81°F
24 Hours Forecast
Trondheim
Local time: 19:11
July 16, thursday
2100
59°F
E
5 mph
July 17, friday
0000
55°F
E
4 mph
0300
54°F
E
4 mph
0600
54°F
E
3 mph
0900
55°F
E
3 mph
1200
57°F
SE
4 mph
1500
59°F
E
6 mph
1800
55°F
E
6 mph
Units of measurement: °C / °F