Measurements:
°C
°F
Lahti
34°F
N 6 mph
Feels like: 28°F
Precip: 0%
World Resorts Finland Lahti Weather

Lahti Sea Water Temperature

Current Sea Water Temperature:
+30.8°F
Maximum Sea Water Temperature in March: 34.0°F
Minimum Sea Water Temperature in March: 26.8°F
Average water temperature in March: 30.6°F

Sea Water Temperature for the Last 10 Days:

March 29 30.8°F March 24 31.2°F
March 28 31.0°F March 23 31.2°F
March 27 31.0°F March 22 30.4°F
March 26 31.0°F March 21 30.4°F
March 25 31.2°F March 20 30.8°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:
May 12 days
June 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 22.5 °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 +34
Helsinki +34
Imatra +34
Juvaskyla +32
Kemi +28
Lahti +34
Lappeenranta +34
Oulu +32
Pori +34
Porvoo +32
Saariselka +30
Seinajoki +32
Turku +34
Vaasa +32
Vantaa +34
24 Hours Weather Forecast
Lahti
Local time: 10:13
30 mar, monday
1200 42°F
N
9 mph
1500 46°F
N
9 mph
1800 44°F
N
7 mph
2100 34°F
NW
4 mph
31 mar, tuesday
0000 32°F
NW
4 mph
0300 34°F
NW
3 mph
0600 36°F
NW
2 mph
0900 36°F
S
2 mph