26.09
sat
sat
Day
52°F
N 14 mph
Precip.
34%
34%
Night
54°F
N 14 mph
Precip.
79%
79%
27.09
sun
sun
Day
54°F
E 11 mph
Precip.
20%
20%
Night
48°F
E 6 mph
Precip.
14%
14%
28.09
mon
mon
Day
57°F
NE 7 mph
Precip.
17%
17%
Night
50°F
N 6 mph
Precip.
37%
37%
29.09
tue
tue
Day
54°F
N 9 mph
Precip.
52%
52%
Night
55°F
SE 8 mph
Precip.
30%
30%
30.09
wed
wed
Day
54°F
S 4 mph
Precip.
20%
20%
Night
46°F
NW 2 mph
Precip.
12%
12%
01.10
thu
thu
Day
54°F
N 6 mph
Precip.
16%
16%
Night
52°F
NE 5 mph
Precip.
20%
20%
02.10
fri
fri
Day
61°F
NE 9 mph
Precip.
6%
6%
Night
52°F
NE 6 mph
Precip.
26%
26%
sea water
temperature
temperature
| Lappeenranta |
monthly
weather
weather
| Lappeenranta |
current
weather
weather
| Lappeenranta |
14 days
forecast
forecast
| Lappeenranta |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 59.7°F. The highest and lowest sea temperatures during the month were 62.8°F and 56.8°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 49.3°F. The highest and lowest sea temperatures during the month were 53.6°F and 44.8°F.
Air temperature in Lappeenranta, °F
Precipitation total in Lappeenranta, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Lappeenranta
Lappeenranta on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Lappeenranta
Local time: 15:20
September 26, saturday
1800
54°F
N
14 mph
14 mph
2100
54°F
N
14 mph
14 mph
September 27, sunday
0000
54°F
N
14 mph
14 mph
0300
54°F
NE
9 mph
9 mph
0600
52°F
NE
7 mph
7 mph
0900
52°F
E
11 mph
11 mph
1200
54°F
E
11 mph
11 mph
1500
59°F
E
11 mph
11 mph
