26.08
wed
wed
Day
66°F
SE 4 mph
Precip.
3%
3%
Night
61°F
S 3 mph
Precip.
15%
15%
27.08
thu
thu
Day
63°F
N 2 mph
Precip.
15%
15%
Night
55°F
N 3 mph
Precip.
25%
25%
28.08
fri
fri
Day
63°F
N 4 mph
Precip.
16%
16%
Night
54°F
NW 4 mph
Precip.
15%
15%
29.08
sat
sat
Day
66°F
NW 10 mph
Precip.
3%
3%
Night
59°F
NW 14 mph
Precip.
47%
47%
30.08
sun
sun
Day
63°F
NE 9 mph
Precip.
34%
34%
Night
57°F
N 9 mph
Precip.
57%
57%
31.08
mon
mon
Day
59°F
N 6 mph
Precip.
78%
78%
Night
55°F
N 6 mph
Precip.
20%
20%
01.09
tue
tue
Day
64°F
N 8 mph
Precip.
27%
27%
Night
55°F
NE 4 mph
Precip.
43%
43%
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 65.0°F. The highest and lowest sea temperatures during the month were 66.4°F and 62.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 60.6°F. The highest and lowest sea temperatures during the month were 63.7°F and 56.5°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: 04:01
August 26, wednesday
0600
57°F
SE
4 mph
4 mph
0900
59°F
S
3 mph
3 mph
1200
66°F
SE
4 mph
4 mph
1500
68°F
S
6 mph
6 mph
1800
66°F
SE
6 mph
6 mph
2100
59°F
S
4 mph
4 mph
August 27, thursday
0000
61°F
S
3 mph
3 mph
0300
55°F
S
1 mph
1 mph
