The warmest month (with the highest average high temperature) is August (9°C).
The month with the lowest average high temperature is December (1°C).
The months with the highest average low temperature are July and August (4°C).
The coldest month (with the lowest average low temperature) is February (-9°C).
The wettest month (with the highest rainfall) is October (119mm).
The driest month (with the least rainfall) is July (30mm).
The best month for swimming (with the highest average sea temperature) is August (2.7°C).
The coldest month (with the lowest average sea temperature) is April (-1.3°C).
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).