September is a popular month to ask about Renesse 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.
Renesse sea temperature in September — averages 17.0°C
The sea at Renesse in Netherlands 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 · Renesse
Can you swim at Renesse in June? — 15.0°C water15.0°CCan you swim at Renesse in July? — 18.0°C water18.0°CCan you swim at Renesse in August? — 19.0°C water19.0°CCan you swim at Renesse in September? — 17.0°C water17.0°CCan you swim at Renesse in October? — 14.0°C water14.0°CCan you swim at Renesse in November? — 11.0°C water11.0°C
Frequently asked questions
What is the average sea temperature at Renesse in September?
Renesse averages 17.0°C in September, based on long-run climatology for the North Sea.
Is the sea warm enough to swim at Renesse in September?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at Renesse in September?
A 2 mm shorty is comfortable for sessions over 30 minutes.