May is a popular month to ask about Mellbystrand because conditions can shift week to week along this coast. Expect the water near 8.0°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.
Mellbystrand sea temperature in May — averages 8.0°C
The sea at Mellbystrand in Sweden averages 8.0°C during May, 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 · May
8.0°C
cold · Poor
Live water now
…
Recommended wetsuit
6/5/4mm hooded fullsuit or drysuit
At 8.0°C only experienced cold-water athletes should enter — full thermal protection required.
Monthly comparison
Cold — wetsuit recommended · Mellbystrand
Can you swim at Mellbystrand in June? — 13.0°C water13.0°CCan you swim at Mellbystrand in July? — 17.0°C water17.0°CCan you swim at Mellbystrand in August? — 18.0°C water18.0°CCan you swim at Mellbystrand in September? — 15.0°C water15.0°CCan you swim at Mellbystrand in October? — 11.0°C water11.0°CCan you swim at Mellbystrand in November? — 7.0°C water7.0°C
Frequently asked questions
What is the average sea temperature at Mellbystrand in May?
Mellbystrand averages 8.0°C in May, based on long-run climatology for the Baltic Sea.
Is the sea warm enough to swim at Mellbystrand in May?
Not without thermal protection — a wetsuit is recommended at 8.0°C.
Do I need a wetsuit at Mellbystrand in May?
A 4/3 mm full wetsuit, boots and neoprene cap are recommended.