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 27.2 °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
15:49
Trondheim
+32°F
S 22 mph
Feels like: +19°F
Precip.: 100%
Places in Norway:
Name
°F
Bergen
+34°F
Lillehammer
+21°F
Ålesund
+37°F
Oslo
+30°F
Stavanger
+37°F
Tromse
+21°F
Trondheim
+32°F
Flam
+1°F
Hemsedal
+9°F
Holmenkollen
+30°F
24 Hours Forecast
Trondheim
Local time: 15:49
December 29, monday
1800
32°F
S
22 mph
2100
32°F
S
20 mph
December 30, tuesday
0000
32°F
S
19 mph
0300
30°F
S
15 mph
0600
30°F
SE
15 mph
0900
32°F
SE
14 mph
1200
32°F
SE
12 mph
1500
34°F
E
14 mph
Units of measurement: °C / °F