Measurements:
°C
°F
Lahti
-6°F
N 3 mph
Feels like: -14°F
Precip: 0%
World Resorts Finland Lahti Weather

Lahti Sea Water Temperature

Current Sea Water Temperature:
+30.0°F
Maximum Sea Water Temperature in February: 32.6°F
Minimum Sea Water Temperature in February: 26.6°F
Average water temperature in February: 30.4°F

Sea Water Temperature for the Last 10 Days:

February 17 30.0°F February 12 30.0°F
February 16 30.0°F February 11 30.0°F
February 15 30.0°F February 10 30.0°F
February 14 30.0°F February 09 30.0°F
February 13 30.0°F February 08 30.2°F

When is the Warmest Sea for Lahti?

According to our data for the last three years for Lahti the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Lahti was 69.1°F. The maximum and minimum values were 63.6°F and 77.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Lahti was 69.3°F. The maximum and minimum values were 60.8°F and 77.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Lahti was 61.8°F. The maximum and minimum values were 57.2°F and 65.2°F respectively.

Best Time to Visit Lahti
The most sunny months:
June 12 days
May 12 days
July 11 days
The most warm months:
July 73.9 °F
August 70.4 °F
June 69.1 °F
Warmest sea temperature:
August 69.9 °F
July 67.3 °F
September 62.7 °F
The most cold months:
January 19.9 °F
February 23.0 °F
December 26.4 °F
The most rainy months:
August 4 days
July 4 days
June 4 days
The most windy months:
December 7 mph
March 7 mph
October 7 mph

Lahti on the Weather Map

Finland Resorts:
NAME
Espoo -2
Helsinki +2
Imatra -2
Juvaskyla 0
Kemi -2
Lahti -6
Lappeenranta -6
Oulu +16
Pori +8
Porvoo +2
Saariselka -20
Seinajoki +12
Turku +2
Vaasa +16
Vantaa -4
24 Hours Weather Forecast
Lahti
Local time: 19:38
17 feb, tuesday
2100 -6°F
N
3 mph
18 feb, wednesday
0000 -8°F
NW
3 mph
0300 -8°F
NW
3 mph
0600 -8°F
NW
3 mph
0900 -4°F
NW
4 mph
1200 10°F
NW
7 mph
1500 12°F
NW
7 mph
1800 6°F
NW
6 mph