Current Sea Water Temperature:
+42.8°F
| Maximum Sea Water Temperature in January: | 44.0°F |
| Minimum Sea Water Temperature in January: | 34.8°F |
| Average water temperature in January: | 40.2°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| January 11 | 42.8°F | January 06 | 42.6°F |
| January 10 | 42.8°F | January 05 | 42.6°F |
| January 09 | 43.0°F | January 04 | 42.8°F |
| January 08 | 40.2°F | January 03 | 43.0°F |
| January 07 | 39.8°F | January 02 | 43.2°F |
When is the Warmest Sea for Trondheim?
According to our data for the last three years for Trondheim the highest average sea water temperature was in July, August and September.
Average Water Temperature by Month, °F
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Trondheim was 65.1°F. The maximum and minimum values were 56.2°F and 74.0°F respectively.
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Trondheim was 61.1°F. The maximum and minimum values were 56.0°F and 69.6°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Trondheim was 56.7°F. The maximum and minimum values were 52.6°F and 60.4°F respectively.
Norway Resorts:
NAME
F°
| Ålesund |  |
+32 |
| Bergen |  |
+26 |
| Flam | |
0 |
| Hemsedal | |
+4 |
| Holmenkollen | |
+2 |
| Lillehammer |  |
-2 |
| Oslo | |
+2 |
| Stavanger | |
+32 |
| Tromse | |
+18 |
| Trondheim | |
+12 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Trondheim
Local time: 16:00
11 jan, sunday
| 1800 |  |
12°F | W 8 mph |
| 2100 |  |
16°F | W 9 mph |
12 jan, monday
| 0000 | |
16°F | W 11 mph |
| 0300 | |
22°F | NW 15 mph |
| 0600 | |
26°F | NW 21 mph |
| 0900 | |
28°F | NW 25 mph |
| 1200 |  |
26°F | NW 30 mph |
| 1500 | |
28°F | N 25 mph |