The highest day temperature in September 2023 was 89°F. The lowest night temperature was 67°F. The average values for day and night temperatures during September were 78.5°F и 70.9°F respectivly.

The average sea surface temperature in September 2023 for Kymi was 78.8°F. The maximum and minimum values were 75.8°F and 81.8°F respectively.

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation total in September for Kymi is 1.5 in.

The average wind speed in September is 8.5 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Kymi in September is 10.2 hours.