18.12
thu
thu
Day
37°F
N 12 mph
Precip.
0%
0%
Night
41°F
NE 20 mph
Precip.
0%
0%
19.12
fri
fri
Day
39°F
N 13 mph
Precip.
100%
100%
Night
41°F
NE 18 mph
Precip.
0%
0%
20.12
sat
sat
Day
39°F
NE 17 mph
Precip.
0%
0%
Night
39°F
E 22 mph
Precip.
0%
0%
21.12
sun
sun
Day
37°F
E 12 mph
Precip.
0%
0%
Night
34°F
E 6 mph
Precip.
0%
0%
22.12
mon
mon
Day
34°F
N 4 mph
Precip.
0%
0%
Night
34°F
SW 7 mph
Precip.
74%
74%
23.12
tue
tue
Day
30°F
SW 14 mph
Precip.
0%
0%
Night
23°F
SW 12 mph
Precip.
0%
0%
24.12
wed
wed
Day
19°F
SW 7 mph
Precip.
0%
0%
Night
18°F
W 3 mph
Precip.
0%
0%
25.12
thu
thu
Day
19°F
N 2 mph
Precip.
69%
69%
Night
28°F
S 11 mph
Precip.
100%
100%
26.12
fri
fri
Day
21°F
N 4 mph
Precip.
0%
0%
Night
32°F
E 16 mph
Precip.
22%
22%
27.12
sat
sat
Day
34°F
SE 21 mph
Precip.
0%
0%
Night
27°F
SE 9 mph
Precip.
0%
0%
28.12
sun
sun
Day
25°F
NW 2 mph
Precip.
23%
23%
Night
23°F
NW 4 mph
Precip.
0%
0%
29.12
mon
mon
Day
21°F
S 2 mph
Precip.
100%
100%
Night
19°F
N 2 mph
Precip.
0%
0%
30.12
tue
tue
Day
19°F
NW 3 mph
Precip.
20%
20%
Night
16°F
W 4 mph
Precip.
0%
0%
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 35.4°F and 32.9°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 31.4°F. The highest and lowest sea temperatures during the month were 34.9°F and 30.0°F.
Air temperature in Vaasa, °F
Precipitation total in Vaasa, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Vaasa
Vaasa on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Vaasa
Local time: 00:43
December 18, thursday
0300
32°F
E
4 mph
4 mph
0600
32°F
NE
4 mph
4 mph
0900
34°F
N
7 mph
7 mph
1200
37°F
N
12 mph
12 mph
1500
37°F
N
15 mph
15 mph
1800
39°F
NE
19 mph
19 mph
2100
39°F
NE
22 mph
22 mph
December 19, friday
0000
41°F
NE
20 mph
20 mph
