26.12
fri
fri
Day
34°F
S 9 mph
Precip.
0%
0%
Night
30°F
E 4 mph
Precip.
0%
0%
27.12
sat
sat
Day
34°F
SE 14 mph
Precip.
72%
72%
Night
27°F
S 21 mph
Precip.
100%
100%
28.12
sun
sun
Day
27°F
S 16 mph
Precip.
0%
0%
Night
25°F
SE 4 mph
Precip.
0%
0%
29.12
mon
mon
Day
30°F
W 1 mph
Precip.
100%
100%
Night
25°F
SE 7 mph
Precip.
49%
49%
30.12
tue
tue
Day
21°F
NE 7 mph
Precip.
100%
100%
Night
21°F
NW 11 mph
Precip.
69%
69%
31.12
wed
wed
Day
19°F
S 9 mph
Precip.
23%
23%
Night
19°F
SW 10 mph
Precip.
83%
83%
01.01
thu
thu
Day
16°F
S 7 mph
Precip.
0%
0%
Night
10°F
S 4 mph
Precip.
0%
0%
02.01
fri
fri
Day
12°F
SW 6 mph
Precip.
0%
0%
Night
14°F
SW 11 mph
Precip.
0%
0%
03.01
sat
sat
Day
16°F
S 11 mph
Precip.
29%
29%
Night
12°F
S 9 mph
Precip.
79%
79%
04.01
sun
sun
Day
14°F
NW 9 mph
Precip.
69%
69%
Night
12°F
S 9 mph
Precip.
83%
83%
05.01
mon
mon
Day
16°F
SE 7 mph
Precip.
100%
100%
Night
16°F
SE 4 mph
Precip.
100%
100%
06.01
tue
tue
Day
16°F
E 3 mph
Precip.
29%
29%
Night
10°F
NE 3 mph
Precip.
0%
0%
07.01
wed
wed
Day
28°F
N 13 mph
Precip.
100%
100%
Night
30°F
N 15 mph
Precip.
100%
100%
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: 00:49
December 26, friday
0300
36°F
S
14 mph
14 mph
0600
36°F
S
13 mph
13 mph
0900
34°F
S
11 mph
11 mph
1200
34°F
S
9 mph
9 mph
1500
32°F
SE
9 mph
9 mph
1800
32°F
S
7 mph
7 mph
2100
30°F
SE
4 mph
4 mph
December 27, saturday
0000
30°F
E
4 mph
4 mph
