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Sea Temperature in Flensburg in September
Complete information on the sea temperature range in the Baltic Sea in Flensburg in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Flensburg. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Water Temperature Range in Flensburg in September
12°C
MINIMUN
16°C
AVERAGE
20°C
MAXIMUM
Historical Data of Water Temperature in September in Flensburg
Water Temperature Chart for Baltic Sea in Flensburg in September
Sea Temperature Table in Flensburg in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 18°C | 19°C | 18°C | 18.3°C |
| Sep 2 | 17°C | 18°C | 18°C | 18.0°C |
| Sep 3 | 18°C | 18°C | 18°C | 18.0°C |
| Sep 4 | 18°C | 18°C | 18°C | 18.0°C |
| Sep 5 | 18°C | 18°C | 18°C | 18.0°C |
| Sep 6 | 18°C | 17°C | 18°C | 17.8°C |
| Sep 7 | 18°C | 17°C | 18°C | 17.8°C |
| Sep 8 | 17°C | 17°C | 17°C | 17.3°C |
| Sep 9 | 17°C | 17°C | 17°C | 17.5°C |
| Sep 10 | 18°C | 17°C | 17°C | 17.8°C |
| Sep 11 | 17°C | 16°C | 17°C | 17.3°C |
| Sep 12 | 17°C | 16°C | 17°C | 17.0°C |
| Sep 13 | 17°C | 16°C | 17°C | 17.0°C |
| Sep 14 | 16°C | 16°C | 17°C | 16.8°C |
| Sep 15 | 16°C | 15°C | 16°C | 16.0°C |
| Sep 16 | 16°C | 15°C | 16°C | 16.0°C |
| Sep 17 | 16°C | 15°C | 16°C | 15.8°C |
| Sep 18 | 18°C | 15°C | 16°C | 16.3°C |
| Sep 19 | 17°C | 14°C | 16°C | 15.8°C |
| Sep 20 | 17°C | 14°C | 16°C | 15.8°C |
| Sep 21 | 17°C | 14°C | 16°C | 15.8°C |
| Sep 22 | 17°C | 14°C | 16°C | 15.8°C |
| Sep 23 | 16°C | 14°C | 15°C | 15.3°C |
| Sep 24 | 16°C | 13°C | 16°C | 15.3°C |
| Sep 25 | 17°C | 13°C | 15°C | 15.3°C |
| Sep 26 | 16°C | 13°C | 16°C | 15.3°C |
| Sep 27 | 16°C | 13°C | 15°C | 15.0°C |
| Sep 28 | 16°C | 12°C | 15°C | 14.8°C |
| Sep 29 | 16°C | 12°C | 16°C | 15.0°C |
Flensburg Climate and Swimming Opportunities in September
18°C
Average Day Air Temperature
10°C
Average Night Air Temperature
67 mm
Precipitation Amount per Month
12 days
Number of Rainy Days
13 hrs
Daylight
per Day
5 hrs
Sunshine
per Day
17 km/h
Average Wind Speed
82%
Average
humidity
Flensburg lies within the Schleswig-Holstein in Germany. The average daytime temperature in Flensburg in September is 18°C (64°F), while the nighttime average is 10°C (49°F). There are typically 12 rainy days during the month, with a total precipitation of 67 mm (2.6 inches). The daylight duration in September in Flensburg is 13 hours, with an average of 5 hours of sunshine per day. The average wind speed in September is 17 km/h (11 mph), and the humidity level is around 82%.
The water temperature in Flensburg in September ranges from 14°C to 18°C (57°F to 64°F). At the beginning of the month, the average temperature is around 18°C (64°F), shifting to 17°C (63°F) by mid-September and reaching 15°C (59°F) in the last ten days. Overall, the average sea temperature in Flensburg for September is 17°C (63°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.
Sea Temperature in September in Nearby Cities
Frequently Asked Questions About Water Temperatures in September in Flensburg
What is the sea temperature in Flensburg in September?
The water temperature in the Baltic Sea in Flensburg in September ranges from 14°C to 18°C (57°F to 64°F).
Is it possible to swim in the Baltic Sea in Flensburg in September?
The average sea temperature in Flensburg in September is 17°C (63°F), and the air temperature is 18°C (64°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.