Current sea water temperature:
+35.6°F
| Minimum sea water temperature in December: | 39.6°F |
| Maximum sea water temperature in December: | 32.2°F |
| Average sea water temperature in December: | 35.8°F |
| more information | |
14 days
forecast
forecast
| Lahti |
monthly
weather
weather
| Lahti |
Sea water temperature for the last 10 days:
| December 21 | 35.6°F | December 16 | 36.1°F |
| December 20 | 35.8°F | December 15 | 36.3°F |
| December 19 | 35.8°F | December 14 | 36.5°F |
| December 18 | 36.0°F | December 13 | 36.7°F |
| December 17 | 36.0°F | December 12 | 36.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Lahti?
Based on the data about daily sea water temperature for the last three years the warmest sea in Lahti was noticed in August, July and September.
Monthly Sea Temperatures in Lahti, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.2°F. The highest and lowest sea temperatures during the month were 74.7°F and 62.2°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 67.4°F. The highest and lowest sea temperatures during the month were 74.5°F and 59.7°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.
current
weather
weather
| Lahti |
weather in
December
December
| Lahti |
Best time for vacation in Lahti
Lahti on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Lahti
Local time: 07:16
December 22, monday
0900
32°F
SW
7 mph
7 mph
1200
27°F
SW
7 mph
7 mph
1500
23°F
SW
6 mph
6 mph
1800
23°F
SW
6 mph
6 mph
2100
23°F
SW
5 mph
5 mph
December 23, tuesday
0000
23°F
SW
4 mph
4 mph
0300
21°F
SW
3 mph
3 mph
0600
21°F
S
2 mph
2 mph
