Current sea water temperature:
+43.7°F
| Minimum sea water temperature in December: | 47.7°F |
| Maximum sea water temperature in December: | 36.3°F |
| Average sea water temperature in December: | 43.1°F |
| more information | |
14 days
forecast
forecast
| Trondheim |
monthly
weather
weather
| Trondheim |
Sea water temperature for the last 10 days:
| December 21 | 43.7°F | December 16 | 42.1°F |
| December 20 | 42.3°F | December 15 | 42.1°F |
| December 19 | 41.4°F | December 14 | 41.7°F |
| December 18 | 42.1°F | December 13 | 41.5°F |
| December 17 | 42.1°F | December 12 | 41.2°F |
Monthly sea water temperature, °F
When is the warmest sea in Trondheim?
Based on the data about daily sea water temperature for the last three years the warmest sea in Trondheim was noticed in July, August and September.
Monthly Sea Temperatures in Trondheim, °F
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 63.6°F. The highest and lowest sea temperatures during the month were 71.6°F and 55.6°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 60.0°F. The highest and lowest sea temperatures during the month were 67.6°F and 55.4°F.
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.
current
weather
weather
| Trondheim |
weather in
December
December
| Trondheim |
Best time for vacation in Trondheim
Trondheim on a weather map
Places in Norway:
Name
°F
24 Hours Forecast
Trondheim
Local time: 18:58
December 21, sunday
2100
34°F
N
2 mph
2 mph
December 22, monday
0000
34°F
W
2 mph
2 mph
0300
34°F
NW
2 mph
2 mph
0600
32°F
NW
2 mph
2 mph
0900
32°F
W
4 mph
4 mph
1200
30°F
W
6 mph
6 mph
1500
30°F
W
6 mph
6 mph
1800
30°F
W
6 mph
6 mph
