19.12
fri
fri
Day
43°F
NE 7 mph
Precip.
100%
100%
Night
34°F
NW 4 mph
Precip.
0%
0%
20.12
sat
sat
Day
41°F
E 16 mph
Precip.
72%
72%
Night
39°F
N 7 mph
Precip.
0%
0%
21.12
sun
sun
Day
36°F
N 3 mph
Precip.
100%
100%
Night
34°F
W 4 mph
Precip.
0%
0%
22.12
mon
mon
Day
32°F
W 4 mph
Precip.
0%
0%
Night
30°F
W 3 mph
Precip.
0%
0%
23.12
tue
tue
Day
28°F
NW 2 mph
Precip.
0%
0%
Night
28°F
NW 4 mph
Precip.
0%
0%
24.12
wed
wed
Day
27°F
N 3 mph
Precip.
0%
0%
Night
34°F
NE 4 mph
Precip.
28%
28%
25.12
thu
thu
Day
37°F
NE 6 mph
Precip.
22%
22%
Night
37°F
NE 4 mph
Precip.
0%
0%
sea water
temperature
temperature
| Trondheim |
monthly
weather
weather
| Trondheim |
current
weather
weather
| Trondheim |
14 days
forecast
forecast
| Trondheim |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 42.7°F. The highest and lowest sea temperatures during the month were 45.3°F and 40.3°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 41.6°F. The highest and lowest sea temperatures during the month were 43.3°F and 39.0°F.
Air temperature in Trondheim, °F
Precipitation total in Trondheim, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Trondheim
Trondheim on a weather map
Places in Norway:
Name
°F
24 Hours Forecast
Trondheim
Local time: 21:15
December 20, saturday
0000
34°F
NW
4 mph
4 mph
0300
34°F
N
6 mph
6 mph
0600
36°F
NE
9 mph
9 mph
0900
41°F
E
14 mph
14 mph
1200
41°F
E
16 mph
16 mph
1500
41°F
E
14 mph
14 mph
1800
39°F
NE
8 mph
8 mph
2100
41°F
NE
6 mph
6 mph
