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%
01.01
thu
thu
Day

18°F
S 7 mph
Precip.
78%
78%
Night

14°F
S 5 mph
Precip.
0%
0%
02.01
fri
fri
Day

12°F
SE 1 mph
Precip.
0%
0%
Night

9°F
N 2 mph
Precip.
0%
0%
03.01
sat
sat
Day

21°F
NW 6 mph
Precip.
100%
100%
Night

30°F
NE 12 mph
Precip.
22%
22%
04.01
sun
sun
Day

30°F
N 12 mph
Precip.
100%
100%
Night

32°F
N 5 mph
Precip.
100%
100%
05.01
mon
mon
Day

25°F
S 9 mph
Precip.
58%
58%
Night

16°F
S 7 mph
Precip.
0%
0%
06.01
tue
tue
Day

14°F
S 3 mph
Precip.
0%
0%
Night

5°F
SW 2 mph
Precip.
0%
0%
07.01
wed
wed
Day

12°F
NE 4 mph
Precip.
0%
0%
Night

28°F
NE 7 mph
Precip.
48%
48%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 36.9°F. The highest and lowest sea temperatures during the month were 39.6°F and 34.5°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: 10:47
December 25, thursday
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
0900

34°F
S
11 mph
11 mph

























