17.05
sun
sun
Day

59°F
NE 8 mph
Precip.
0%
0%
Night

45°F
NE 4 mph
Precip.
0%
0%
18.05
mon
mon
Day

63°F
W 2 mph
Precip.
0%
0%
Night

50°F
SW 4 mph
Precip.
0%
0%
19.05
tue
tue
Day

57°F
NW 3 mph
Precip.
0%
0%
Night

54°F
SE 4 mph
Precip.
0%
0%
20.05
wed
wed
Day

57°F
SE 6 mph
Precip.
0%
0%
Night

52°F
SE 3 mph
Precip.
0%
0%
21.05
thu
thu
Day

66°F
NE 2 mph
Precip.
0%
0%
Night

50°F
NE 4 mph
Precip.
0%
0%
22.05
fri
fri
Day

55°F
W 2 mph
Precip.
61%
61%
Night

50°F
E 3 mph
Precip.
66%
66%
23.05
sat
sat
Day

52°F
E 7 mph
Precip.
100%
100%
Night

48°F
E 11 mph
Precip.
0%
0%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 45.8°F. The highest and lowest sea temperatures during the month were 49.8°F and 41.0°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: 13:50
May 17, sunday
1500

61°F
NE
9 mph
9 mph
1800

61°F
NE
9 mph
9 mph
2100

52°F
NE
6 mph
6 mph
May 18, monday
0000

45°F
NE
4 mph
4 mph
0300

41°F
E
2 mph
2 mph
0600

43°F
SE
2 mph
2 mph
0900

55°F
SW
2 mph
2 mph
1200

63°F
W
2 mph
2 mph




























