Warmest months (with the highest average high temperature) are July and August (16°C).
The month with the lowest average high temperature is January (2°C).
Months with the highest average low temperature are July and August (11°C).
Coldest months (with the lowest average low temperature) are January and February (-1°C).
The best month for swimming (with the highest average sea temperature) is August (14°C).
The coldest month (with the lowest average sea temperature) is March (5.8°C).
The month with the longest days is June (Average daylight: 20.2h).
The month with shortest days is December (Average daylight: 4.9h).