25.12
thu
thu
Day
39°F
E 14 mph
Precip.
0%
0%
Night
37°F
S 14 mph
Precip.
0%
0%
26.12
fri
fri
Day
34°F
S 8 mph
Precip.
0%
0%
Night
34°F
E 5 mph
Precip.
0%
0%
27.12
sat
sat
Day
34°F
SE 14 mph
Precip.
0%
0%
Night
28°F
S 21 mph
Precip.
100%
100%
28.12
sun
sun
Day
28°F
S 16 mph
Precip.
0%
0%
Night
25°F
E 4 mph
Precip.
0%
0%
29.12
mon
mon
Day
30°F
W 1 mph
Precip.
100%
100%
Night
25°F
S 11 mph
Precip.
100%
100%
30.12
tue
tue
Day
25°F
SE 11 mph
Precip.
0%
0%
Night
19°F
SE 6 mph
Precip.
0%
0%
31.12
wed
wed
Day
18°F
NE 3 mph
Precip.
0%
0%
Night
19°F
SW 7 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 37.0°F. The highest and lowest sea temperatures during the month were 39.6°F and 34.7°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: 08:24
December 25, thursday
0900
39°F
E
13 mph
13 mph
1200
39°F
E
14 mph
14 mph
1500
39°F
SE
14 mph
14 mph
1800
41°F
SE
15 mph
15 mph
2100
41°F
SE
14 mph
14 mph
December 26, friday
0000
37°F
S
14 mph
14 mph
0300
36°F
S
12 mph
12 mph
0600
34°F
S
11 mph
11 mph
