Sea Temperature in Marstal in September

Complete information on the sea temperature range in the Baltic Sea in Marstal in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Marstal. 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 Marstal in September

12°C

MINIMUN

16°C

AVERAGE

20°C

MAXIMUM

Historical Data of Water Temperature in September in Marstal

Water Temperature Chart for Baltic Sea in Marstal in September

Sea Temperature Table in Marstal in September Over the Past Years

Day	2024	2023	2022	Average
Sep 1	18°C	19°C	18°C	18.3°C
Sep 2	18°C	19°C	18°C	18.3°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	18.3°C
Sep 6	17°C	18°C	18°C	17.8°C
Sep 7	17°C	18°C	18°C	18.0°C
Sep 8	17°C	17°C	17°C	17.3°C
Sep 9	17°C	18°C	17°C	17.5°C
Sep 10	18°C	18°C	17°C	17.8°C
Sep 11	18°C	17°C	17°C	17.5°C
Sep 12	17°C	17°C	17°C	17.3°C
Sep 13	17°C	17°C	17°C	17.3°C
Sep 14	17°C	17°C	17°C	17.0°C
Sep 15	17°C	17°C	16°C	16.5°C
Sep 16	17°C	17°C	15°C	16.5°C
Sep 17	16°C	17°C	15°C	16.0°C
Sep 18	17°C	17°C	15°C	16.3°C
Sep 19	16°C	16°C	15°C	15.5°C
Sep 20	16°C	16°C	15°C	15.8°C
Sep 21	16°C	16°C	15°C	15.5°C
Sep 22	16°C	16°C	15°C	15.8°C
Sep 23	16°C	17°C	15°C	16.0°C
Sep 24	16°C	17°C	15°C	16.0°C
Sep 25	16°C	16°C	15°C	15.8°C
Sep 26	16°C	16°C	15°C	15.8°C
Sep 27	16°C	16°C	15°C	15.8°C
Sep 28	16°C	16°C	15°C	15.8°C
Sep 29	16°C	16°C	14°C	15.5°C

Marstal Climate and Swimming Opportunities in September

18°C

Average Day Air Temperature

10°C

Average Night Air Temperature

59 mm

Precipitation Amount per Month

12 days

Number of Rainy Days

13 hrs

Daylight
per Day

5 hrs

Sunshine
per Day

19 km/h

Average Wind Speed

82%

Average
humidity

Marstal lies within the Region of Southern Denmark in Denmark. The average daytime temperature in Marstal in September is 18°C (64°F), while the nighttime average is 10°C (50°F). There are typically 12 rainy days during the month, with a total precipitation of 59 mm (2.3 inches). The daylight duration in September in Marstal is 13 hours, with an average of 5 hours of sunshine per day. The average wind speed in September is 19 km/h (12 mph), and the humidity level is around 82%.

The water temperature in Marstal in September ranges from 15°C to 18°C (59°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 16°C (61°F) in the last ten days. Overall, the average sea temperature in Marstal 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 Marstal

What is the sea temperature in Marstal in September?

The water temperature in the Baltic Sea in Marstal in September ranges from 15°C to 18°C (59°F to 64°F).

Is it possible to swim in the Baltic Sea in Marstal in September?

The average sea temperature in Marstal 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.