The highest day temperature in September 2026 was 76°F. The lowest night temperature was 48°F. The average values for day and night temperatures during September were 66.3°F и 55.6°F respectivly.

The average sea surface temperature in September 2026 for Rostock was 64.4°F. The maximum and minimum values were 60.4°F and 67.2°F respectively.

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

Precipitation total in September for Rostock is 1.7 in.

The average wind speed in September is 10.4 mph. It makes September one of the most windless months of the year for Rostock.

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 Rostock in September is 7.0 hours.