18.12
thu
thu
Day
36°F
NE 4 mph
Precip.
0%
0%
Night
41°F
NE 14 mph
Precip.
0%
0%
19.12
fri
fri
Day
43°F
NE 11 mph
Precip.
0%
0%
Night
43°F
NE 11 mph
Precip.
100%
100%
20.12
sat
sat
Day
41°F
E 10 mph
Precip.
60%
60%
Night
39°F
E 8 mph
Precip.
0%
0%
21.12
sun
sun
Day
37°F
SE 8 mph
Precip.
0%
0%
Night
32°F
SE 6 mph
Precip.
0%
0%
22.12
mon
mon
Day
34°F
W 3 mph
Precip.
0%
0%
Night
30°F
W 9 mph
Precip.
0%
0%
23.12
tue
tue
Day
27°F
SW 11 mph
Precip.
0%
0%
Night
21°F
SW 11 mph
Precip.
0%
0%
24.12
wed
wed
Day
23°F
W 11 mph
Precip.
0%
0%
Night
23°F
W 6 mph
Precip.
0%
0%
25.12
thu
thu
Day
25°F
W 4 mph
Precip.
0%
0%
Night
23°F
N 4 mph
Precip.
0%
0%
26.12
fri
fri
Day
23°F
E 5 mph
Precip.
0%
0%
Night
23°F
E 6 mph
Precip.
0%
0%
27.12
sat
sat
Day
27°F
E 4 mph
Precip.
0%
0%
Night
27°F
NE 4 mph
Precip.
0%
0%
28.12
sun
sun
Day
27°F
NE 4 mph
Precip.
0%
0%
Night
28°F
E 6 mph
Precip.
0%
0%
29.12
mon
mon
Day
27°F
SE 8 mph
Precip.
0%
0%
Night
25°F
SE 6 mph
Precip.
0%
0%
30.12
tue
tue
Day
27°F
E 6 mph
Precip.
0%
0%
Night
28°F
SE 9 mph
Precip.
0%
0%
31.12
wed
wed
Day
34°F
SE 11 mph
Precip.
0%
0%
Night
32°F
SE 9 mph
Precip.
21%
21%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 40.1°F. The highest and lowest sea temperatures during the month were 42.1°F and 36.5°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 35.1°F. The highest and lowest sea temperatures during the month were 37.0°F and 33.6°F.
Air temperature in Vantaa, °F
Precipitation total in Vantaa, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Vantaa
Vantaa on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Vantaa
Local time: 11:24
December 18, thursday
1200
36°F
NE
4 mph
4 mph
1500
37°F
N
6 mph
6 mph
1800
37°F
N
9 mph
9 mph
2100
41°F
N
12 mph
12 mph
December 19, friday
0000
41°F
NE
14 mph
14 mph
0300
43°F
NE
9 mph
9 mph
0600
41°F
NE
9 mph
9 mph
0900
41°F
NE
9 mph
9 mph
