October is a popular month to ask about Bellevue because conditions can shift week to week along this coast. Expect the water near 12.0°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 Baltic Sea.
Bellevue sea temperature in October — averages 12.0°C
The sea at Bellevue in Denmark averages 12.0°C during October, based on long-run climatology for the Baltic 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 · October
12.0°C
cool · Fair
Live water now
…
Recommended wetsuit
5/4mm fullsuit + boots & gloves
At 12.0°C you need a 5/4mm fullsuit with boots, gloves and ideally a hood.
Monthly comparison
Cool — short dips or a shorty wetsuit · Bellevue
Can you swim at Bellevue in June? — 13.0°C water13.0°CCan you swim at Bellevue in July? — 17.0°C water17.0°CCan you swim at Bellevue in August? — 18.0°C water18.0°CCan you swim at Bellevue in September? — 16.0°C water16.0°CCan you swim at Bellevue in October? — 12.0°C water12.0°CCan you swim at Bellevue in November? — 8.0°C water8.0°C
Frequently asked questions
What is the average sea temperature at Bellevue in October?
Bellevue averages 12.0°C in October, based on long-run climatology for the Baltic Sea.
Is the sea warm enough to swim at Bellevue in October?
Not without thermal protection — a wetsuit is recommended at 12.0°C.
Do I need a wetsuit at Bellevue in October?
A 3/2 mm wetsuit makes longer swims comfortable.