Measurements:
°C
°F
CURRENT WEATHER
23:56
Lappeenranta
60°F
N 11 mph
Feels like: 56°F
Precip: 26%
World Resorts Finland Lappeenranta Weather

7 Day Weather Forecast

09.08
tue
DAY
60°F
NE 12 mph
precip
27%
NIGHT
60°F
N 11 mph
precip
26%
09.09
wed
DAY
62°F
NE 11 mph
precip
37%
NIGHT
60°F
NW 6 mph
precip
56%
09.10
thu
DAY
60°F
N 16 mph
precip
48%
NIGHT
50°F
NE 11 mph
precip
13%
09.11
fri
DAY
54°F
SE 9 mph
precip
40%
NIGHT
50°F
NE 6 mph
precip
39%
09.12
sat
DAY
60°F
NE 14 mph
precip
32%
NIGHT
52°F
E 5 mph
precip
27%
09.13
sun
DAY
60°F
N 4 mph
precip
12%
NIGHT
52°F
NE 2 mph
precip
37%
09.14
mon
DAY
62°F
S 2 mph
precip
18%
NIGHT
52°F
NW 1 mph
precip
12%

Lappeenranta Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Lappeenranta was 16.2°F. The maximum and minimum values were 13.0°F and 18.3°F respectively.

Lappeenranta on the Weather Map

Best Time to Visit Lappeenranta
The most sunny months:
July 12 days
June 11 days
May 11 days
The most warm months:
July 73.2 °F
August 70.0 °F
June 67.9 °F
Warmest sea temperature:
August 67.4 °F
July 66.8 °F
September 60.3 °F
The most cold months:
January 19.0 °F
February 21.0 °F
December 26.2 °F
The most rainy months:
June 4 days
October 4 days
August 4 days
The most windy months:
December 9 mph
November 9 mph
October 9 mph
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