Current sea water temperature:
+45.7°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 29 | 45.7°F | December 24 | 43.0°F |
| December 28 | 45.0°F | December 23 | 42.4°F |
| December 27 | 45.0°F | December 22 | 43.5°F |
| December 26 | 44.6°F | December 21 | 43.7°F |
| December 25 | 43.3°F | December 20 | 42.3°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
January
January
| Trondheim |
Best time for vacation in Trondheim
Trondheim on a weather map
Places in Norway:
Name
°F
24 Hours Forecast
Trondheim
Local time: 14:24
December 29, monday
1500
32°F
S
22 mph
22 mph
1800
32°F
S
22 mph
22 mph
2100
32°F
S
20 mph
20 mph
December 30, tuesday
0000
32°F
S
19 mph
19 mph
0300
30°F
S
15 mph
15 mph
0600
30°F
SE
15 mph
15 mph
0900
32°F
SE
14 mph
14 mph
1200
32°F
SE
12 mph
12 mph
