September is a popular month to ask about Borestranden because conditions can shift week to week along this coast. Expect the water near 15.0°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.
Borestranden sea temperature in September — averages 15.0°C
The sea at Borestranden in Norway averages 15.0°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
15.0°C
mild · Fair
Live water now
…
Recommended wetsuit
4/3mm fullsuit
At 15.0°C you need a 4/3mm fullsuit, and many surfers add neoprene boots.
Monthly comparison
Cool — short dips or a shorty wetsuit · Borestranden
Can you swim at Borestranden in July? — 16.0°C water16.0°CCan you swim at Borestranden in August? — 17.0°C water17.0°CCan you swim at Borestranden in September? — 15.0°C water15.0°CCan you swim at Borestranden in October? — 11.0°C water11.0°CCan you swim at Borestranden in November? — 7.0°C water7.0°CCan you swim at Borestranden in December? — 5.0°C water5.0°C
Frequently asked questions
What is the average sea temperature at Borestranden in September?
Borestranden averages 15.0°C in September, based on long-run climatology for the North Sea.
Is the sea warm enough to swim at Borestranden in September?
Not without thermal protection — a wetsuit is recommended at 15.0°C.
Do I need a wetsuit at Borestranden in September?
A 3/2 mm wetsuit makes longer swims comfortable.