The highest day temperature in September 2026 was 82°F. The lowest night temperature was 45°F. The average values for day and night temperatures during September were 69.4°F и 55.5°F respectivly.

The average sea surface temperature in September 2026 for Bremen was 67.3°F. The maximum and minimum values were 64.8°F and 69.8°F respectively.

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

Precipitation total in September for Bremen is 1.2 in. It makes september one of the least rainy months of the year.

The average wind speed in September is 8.7 mph. It makes September one of the most windless months of the year for Bremen.

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 Bremen in September is 6.6 hours.