Current sea water temperature:
+36.3°F
| Minimum sea water temperature in December: | 39.9°F |
| Maximum sea water temperature in December: | 29.8°F |
| Average sea water temperature in December: | 34.8°F |
| more information | |
14 days
forecast
forecast
| Lappeenranta |
monthly
weather
weather
| Lappeenranta |
Sea water temperature for the last 10 days:
| December 17 | 36.3°F | December 12 | 36.1°F |
| December 16 | 36.7°F | December 11 | 36.5°F |
| December 15 | 37.0°F | December 10 | 35.8°F |
| December 14 | 37.4°F | December 9 | 36.1°F |
| December 13 | 37.6°F | December 8 | 36.1°F |
Monthly sea water temperature, °F
When is the warmest sea in Lappeenranta?
Based on the data about daily sea water temperature for the last three years the warmest sea in Lappeenranta was noticed in August, July and September.
Monthly Sea Temperatures in Lappeenranta, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.9°F. The highest and lowest sea temperatures during the month were 76.1°F and 61.3°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 67.1°F. The highest and lowest sea temperatures during the month were 75.9°F and 59.9°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 61.2°F. The highest and lowest sea temperatures during the month were 64.9°F and 55.4°F.
current
weather
weather
| Lappeenranta |
weather in
December
December
| Lappeenranta |
Best time for vacation in Lappeenranta
Lappeenranta on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Lappeenranta
Local time: 00:40
December 18, thursday
0300
37°F
E
14 mph
14 mph
0600
39°F
SE
14 mph
14 mph
0900
36°F
SE
11 mph
11 mph
1200
34°F
E
5 mph
5 mph
1500
32°F
E
4 mph
4 mph
1800
32°F
N
5 mph
5 mph
2100
34°F
N
6 mph
6 mph
December 19, friday
0000
36°F
N
9 mph
9 mph
