Weather in Kymi: September
 |
Average day temperature: | 78.9°F |
| Average night temperature: | 68.9°F | |
 |
Sea water temperature: | 76.6°F |
 |
Number of sunny days: | 23 days |
| Day length: | 11.8 - 13.0 hours | |
 |
Number of rainy days: | 2 days |
| Precipitation totals: | 1.4 in. | |
| more information | ||
forecast
| Kymi |
temperature
| Kymi |
Air temperature in September, °F
The highest day temperature during September of 2025 was 84°F. At the same time the lowest night temperature was 59°F. Daily and nightly averages during September were 76.8°F and 68.0°F.
Sea water temperature in Kymi in September, °F
The average sea water temperature in September of 2025 was 76.9°F. The highest and lowest sea temperatures during the month were 79.0°F and 74.1°F.
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Kymi in September is 1.5 in. Other months of the year show relatively similar values.
The average wind speed value in September is 7.6 mph
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: 9.8.
Best time for vacation in Kymi
Kymi on a weather map
6 mph
3 mph
4 mph
4 mph
5 mph
4 mph
3 mph
2 mph
