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:
May 8 days
July 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
December 29.7 °F
February 29.8 °F
Rainiest months:
September 6 days
March 5 days
July 5 days
Windiest months:
January 8.3 mph
December 8.0 mph
March 8.0 mph

Trondheim on a weather map

Current weather
02:10
Trondheim
+27°F
NW 14 mph
Feels like: +16°F
Precip.: 0%
Places in Norway:
Name
°F
Bergen
+37°F
Lillehammer
+18°F
Ålesund
+41°F
Oslo
+18°F
Stavanger
+39°F
Tromse
+9°F
Trondheim
+27°F
Flam
+19°F
Hemsedal
+19°F
Holmenkollen
+19°F
24 Hours Forecast
Trondheim
Local time: 02:10
February 25, wednesday
0300
27°F
NW
14 mph
0600
27°F
NW
10 mph
0900
28°F
NW
12 mph
1200
30°F
NW
9 mph
1500
30°F
NW
7 mph
1800
28°F
W
7 mph
2100
28°F
W
7 mph
February 26, thursday
0000
30°F
W
6 mph
Units of measurement: °C / °F