18.12
thu
thu
Day
37°F
N 9 mph
Precip.
0%
0%
Night
34°F
E 4 mph
Precip.
0%
0%
19.12
fri
fri
Day
39°F
N 7 mph
Precip.
80%
80%
Night
39°F
NE 11 mph
Precip.
0%
0%
20.12
sat
sat
Day
39°F
E 9 mph
Precip.
0%
0%
Night
39°F
SE 12 mph
Precip.
0%
0%
21.12
sun
sun
Day
34°F
E 5 mph
Precip.
0%
0%
Night
32°F
E 3 mph
Precip.
0%
0%
22.12
mon
mon
Day
32°F
SW 3 mph
Precip.
0%
0%
Night
28°F
S 5 mph
Precip.
55%
55%
23.12
tue
tue
Day
27°F
SW 11 mph
Precip.
100%
100%
Night
25°F
SW 15 mph
Precip.
100%
100%
24.12
wed
wed
Day
21°F
SW 13 mph
Precip.
0%
0%
Night
19°F
SW 9 mph
Precip.
70%
70%
25.12
thu
thu
Day
16°F
S 7 mph
Precip.
79%
79%
Night
16°F
SE 5 mph
Precip.
26%
26%
26.12
fri
fri
Day
16°F
SE 4 mph
Precip.
0%
0%
Night
16°F
SE 3 mph
Precip.
0%
0%
27.12
sat
sat
Day
18°F
E 2 mph
Precip.
0%
0%
Night
18°F
SE 4 mph
Precip.
0%
0%
28.12
sun
sun
Day
18°F
E 4 mph
Precip.
0%
0%
Night
19°F
E 5 mph
Precip.
0%
0%
29.12
mon
mon
Day
27°F
SE 9 mph
Precip.
0%
0%
Night
18°F
SE 6 mph
Precip.
0%
0%
30.12
tue
tue
Day
27°F
SE 13 mph
Precip.
0%
0%
Night
27°F
E 12 mph
Precip.
0%
0%
31.12
wed
wed
Day
28°F
SE 12 mph
Precip.
0%
0%
Night
30°F
E 14 mph
Precip.
0%
0%
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: 20:56
December 18, thursday
2100
41°F
NE
9 mph
9 mph
December 19, friday
0000
34°F
E
4 mph
4 mph
0300
30°F
SE
2 mph
2 mph
0600
32°F
NW
1 mph
1 mph
0900
34°F
NW
4 mph
4 mph
1200
39°F
N
7 mph
7 mph
1500
43°F
NE
9 mph
9 mph
1800
43°F
NE
10 mph
10 mph
