September is a popular month to ask about St Peter-Ording because conditions can shift week to week along this coast. Expect the water near 17.0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the North Sea.
St Peter-Ording sea temperature in September — averages 17.0°C
The sea at St Peter-Ording in Germany averages 17.0°C during September, based on long-run climatology for the North Sea. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · September
17.0°C
mild · Fair
Live water now
…
Recommended wetsuit
3/2mm fullsuit
At 17.0°C a 3/2mm fullsuit is the standard wetsuit for surfing and watersports.
Monthly comparison
Yes, but expect a fresh dip · St Peter-Ording
Can you swim at St Peter-Ording in June? — 14.0°C water14.0°CCan you swim at St Peter-Ording in July? — 18.0°C water18.0°CCan you swim at St Peter-Ording in August? — 19.0°C water19.0°CCan you swim at St Peter-Ording in September? — 17.0°C water17.0°CCan you swim at St Peter-Ording in October? — 13.0°C water13.0°CCan you swim at St Peter-Ording in November? — 9.0°C water9.0°C
Frequently asked questions
What is the average sea temperature at St Peter-Ording in September?
St Peter-Ording averages 17.0°C in September, based on long-run climatology for the North Sea.
Is the sea warm enough to swim at St Peter-Ording in September?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at St Peter-Ording in September?
A 2 mm shorty is comfortable for sessions over 30 minutes.