The highest day temperature in September 2026 was 76°F. The lowest night temperature was 46°F. The average values for day and night temperatures during September were 65.3°F и 54.3°F respectivly.

The average sea surface temperature in September 2026 for Kiel was 64.0°F. The maximum and minimum values were 61.6°F and 65.2°F respectively.

You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in September for Kiel is 1.3 in.

The average wind speed in September is 10.0 mph. It makes September one of the most windless months of the year for Kiel.

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 Kiel in September is 6.6 hours.