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Kouvola weather in September

Weather in Kouvola: September

Average day temperature: 59.0°F
Average night temperature: 49.6°F
Number of sunny days: 8 days
Day length: 11.5 - 14.2 hours
Number of rainy days: 3 days
Precipitation totals: 1.8 in.

Air temperature in September, °F

Show year:
2025
2024
2023

The highest day temperature during September of 2025 was 73°F. At the same time the lowest night temperature was 35°F. Daily and nightly averages during September were 62.1°F and 51.9°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Kouvola in September is 1.6 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 6.9 mph It makes September one of the least windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 6.5.

Best time for vacation in Kouvola

Sunniest months:
July 13 days
June 12 days
May 12 days
Warmest months:
July 71.3 °F
August 68.4 °F
June 66.7 °F
Coldest months:
January 23.7 °F
February 25.8 °F
December 29.2 °F
Rainiest months:
August 5 days
July 5 days
October 4 days
Windiest months:
December 8.1 mph
January 7.9 mph
March 7.9 mph

Kouvola on a weather map

Kouvola
+37°F
N 4 mph
Feels like: +34°F
Precip.: 0%
Places in Finland:
Name
°F
+39°F
+39°F
+32°F
+39°F
+37°F
+37°F
+36°F
+39°F
+18°F
+36°F
+41°F
+39°F
+39°F
+36°F
24 Hours Forecast
Kouvola
Local time: 10:28
December 05, friday
1200
39°F
N
4 mph
1500
37°F
NE
4 mph
1800
36°F
N
3 mph
2100
36°F
NW
3 mph
December 06, saturday
0000
37°F
NW
3 mph
0300
37°F
NW
4 mph
0600
39°F
W
5 mph
0900
37°F
W
6 mph
Units of measurement: °C / °F