27.08
thu
thu
Day

68°F
SW 2 mph
Precip.
3%
3%
Night

57°F
NW 4 mph
Precip.
26%
26%
28.08
fri
fri
Day

63°F
N 4 mph
Precip.
17%
17%
Night

57°F
NW 5 mph
Precip.
26%
26%
29.08
sat
sat
Day

66°F
NW 11 mph
Precip.
14%
14%
Night

61°F
NW 9 mph
Precip.
21%
21%
30.08
sun
sun
Day

63°F
NE 9 mph
Precip.
41%
41%
Night

57°F
NE 7 mph
Precip.
43%
43%
31.08
mon
mon
Day

64°F
NE 11 mph
Precip.
24%
24%
Night

57°F
N 4 mph
Precip.
36%
36%
01.09
tue
tue
Day

63°F
N 13 mph
Precip.
43%
43%
Night

55°F
NE 7 mph
Precip.
57%
57%
02.09
wed
wed
Day

57°F
NE 9 mph
Precip.
37%
37%
Night

55°F
E 6 mph
Precip.
44%
44%
03.09
thu
thu
Day

63°F
E 3 mph
Precip.
49%
49%
Night

54°F
E 4 mph
Precip.
51%
51%
04.09
fri
fri
Day

57°F
SW 4 mph
Precip.
60%
60%
Night

52°F
NW 3 mph
Precip.
43%
43%
05.09
sat
sat
Day

50°F
W 13 mph
Precip.
87%
87%
Night

48°F
W 12 mph
Precip.
46%
46%
06.09
sun
sun
Day

48°F
SW 12 mph
Precip.
19%
19%
Night

46°F
SE 7 mph
Precip.
22%
22%
07.09
mon
mon
Day

50°F
SE 10 mph
Precip.
25%
25%
Night

41°F
SE 6 mph
Precip.
32%
32%
08.09
tue
tue
Day

48°F
S 7 mph
Precip.
22%
22%
Night

45°F
SE 5 mph
Precip.
17%
17%
09.09
wed
wed
Day

52°F
S 7 mph
Precip.
14%
14%
Night

48°F
NW 2 mph
Precip.
18%
18%
sea water
temperature
temperature
| Lappeenranta |
monthly
weather
weather
| Lappeenranta |
current
weather
weather
| Lappeenranta |
7 days
forecast
forecast
| Lappeenranta |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 65.2°F. The highest and lowest sea temperatures during the month were 67.5°F and 62.6°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.
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: 14:44
August 27, thursday
1500

68°F
S
6 mph
6 mph
1800

64°F
SW
2 mph
2 mph
2100

61°F
NW
4 mph
4 mph
August 28, friday
0000

57°F
NW
4 mph
4 mph
0300

57°F
NW
4 mph
4 mph
0600

57°F
NW
3 mph
3 mph
0900

59°F
N
2 mph
2 mph
1200

63°F
N
4 mph
4 mph



























