18.12
thu
thu
Day
37°F
N 9 mph
Precip.
100%
100%
Night
30°F
E 3 mph
Precip.
0%
0%
19.12
fri
fri
Day
41°F
N 12 mph
Precip.
0%
0%
Night
39°F
NE 11 mph
Precip.
0%
0%
20.12
sat
sat
Day
37°F
E 6 mph
Precip.
0%
0%
Night
37°F
E 11 mph
Precip.
0%
0%
21.12
sun
sun
Day
39°F
SE 13 mph
Precip.
0%
0%
Night
34°F
SE 3 mph
Precip.
0%
0%
22.12
mon
mon
Day
34°F
S 2 mph
Precip.
0%
0%
Night
32°F
NW 6 mph
Precip.
100%
100%
23.12
tue
tue
Day
27°F
S 5 mph
Precip.
0%
0%
Night
23°F
S 4 mph
Precip.
0%
0%
24.12
wed
wed
Day
19°F
SE 3 mph
Precip.
0%
0%
Night
21°F
NE 2 mph
Precip.
66%
66%
25.12
thu
thu
Day
19°F
SE 4 mph
Precip.
0%
0%
Night
19°F
SE 4 mph
Precip.
0%
0%
26.12
fri
fri
Day
21°F
E 3 mph
Precip.
0%
0%
Night
28°F
E 10 mph
Precip.
0%
0%
27.12
sat
sat
Day
30°F
SE 17 mph
Precip.
0%
0%
Night
28°F
E 7 mph
Precip.
100%
100%
28.12
sun
sun
Day
30°F
S 2 mph
Precip.
100%
100%
Night
25°F
SE 4 mph
Precip.
0%
0%
29.12
mon
mon
Day
23°F
NW 3 mph
Precip.
0%
0%
Night
21°F
W 2 mph
Precip.
0%
0%
30.12
tue
tue
Day
23°F
E 4 mph
Precip.
100%
100%
Night
14°F
NE 7 mph
Precip.
100%
100%
31.12
wed
wed
Day
12°F
N 2 mph
Precip.
0%
0%
Night
21°F
W 11 mph
Precip.
100%
100%
sea water
temperature
temperature
| Sundsvall |
monthly
weather
weather
| Sundsvall |
current
weather
weather
| Sundsvall |
7 days
forecast
forecast
| Sundsvall |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 34.5°F. The highest and lowest sea temperatures during the month were 36.9°F and 32.0°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 33.2°F. The highest and lowest sea temperatures during the month were 34.7°F and 31.8°F.
Air temperature in Sundsvall, °F
Precipitation total in Sundsvall, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Sundsvall
Sundsvall on a weather map
Places in Sweden:
Name
°F
24 Hours Forecast
Sundsvall
Local time: 02:37
December 18, thursday
0300
30°F
N
1 mph
1 mph
0600
32°F
N
3 mph
3 mph
0900
34°F
N
6 mph
6 mph
1200
37°F
N
9 mph
9 mph
1500
37°F
N
11 mph
11 mph
1800
39°F
NE
12 mph
12 mph
2100
39°F
NE
9 mph
9 mph
December 19, friday
0000
30°F
E
3 mph
3 mph
