24.12
wed
wed
Day
27°F
SE 4 mph
Precip.
0%
0%
Night
28°F
E 6 mph
Precip.
0%
0%
25.12
thu
thu
Day
39°F
E 14 mph
Precip.
0%
0%
Night
39°F
S 15 mph
Precip.
0%
0%
26.12
fri
fri
Day
34°F
S 11 mph
Precip.
0%
0%
Night
28°F
SE 4 mph
Precip.
0%
0%
27.12
sat
sat
Day
34°F
SE 13 mph
Precip.
0%
0%
Night
30°F
S 18 mph
Precip.
0%
0%
28.12
sun
sun
Day
32°F
NW 12 mph
Precip.
0%
0%
Night
27°F
SE 7 mph
Precip.
0%
0%
29.12
mon
mon
Day
32°F
NW 11 mph
Precip.
0%
0%
Night
27°F
S 3 mph
Precip.
0%
0%
30.12
tue
tue
Day
27°F
N 5 mph
Precip.
25%
25%
Night
30°F
N 1 mph
Precip.
81%
81%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 37.1°F. The highest and lowest sea temperatures during the month were 39.6°F and 35.1°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 33.1°F. The highest and lowest sea temperatures during the month were 34.0°F and 32.4°F.
Air temperature in Lahti, °F
Precipitation total in Lahti, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Lahti
Lahti on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Lahti
Local time: 01:15
December 24, wednesday
0300
25°F
E
9 mph
9 mph
0600
27°F
SE
8 mph
8 mph
0900
25°F
SE
6 mph
6 mph
1200
27°F
SE
4 mph
4 mph
1500
27°F
SE
4 mph
4 mph
1800
27°F
E
4 mph
4 mph
2100
27°F
E
5 mph
5 mph
December 25, thursday
0000
28°F
E
6 mph
6 mph
