May weather forecastÖsthammar, Sweden
May
Weather in May
Sea temperature
In Östhammar, Sweden, in May, the average water temperature is 5.8°C (42.4°F).Note: Immersing oneself in 5.8°C (42.4°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.
Daylight
In May, the average length of the day is 17h and 16min.On the first day of the month, sunrise is at 04:41 and sunset at 20:46. On the last day of May, sunrise is at 03:33 and sunset at 21:55 CEST.
Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Östhammar, the average seawater temperature in May is 5.8°C (42.4°F). Swimming in 5.8°C (42.4°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
In Östhammar, the average day length in May is 17h and 16min.
In May, on the first day of the month, sunrise is at 04:41 and sunset at 20:46. On the last day of the month, in Östhammar, Sweden, sunrise is at 03:33 and sunset at 21:55 CEST.
Average sea temperature in May
Östhammar, Sweden
- Average sea temperature in May: 5.8°C
The best month for swimming (with the highest average sea temperature) is August (18.2°C).
The coldest month (with the lowest average sea temperature) is February (0.1°C).
Average daylight in May
Östhammar, Sweden
- Average daylight in May: 17h and 18min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).





