Monthly weather forecast and climate
Grindavik, Iceland

Average sea temperature - Grindavik, Iceland

The best month for swimming (with the highest average sea temperature) is July (11.7°C).
The coldest month (with the lowest average sea temperature) is March (5.8°C).

Average daylight - Grindavik, Iceland

The month with the longest days is June (Average daylight: 20.6h).
The month with shortest days is December (Average daylight: 4.5h).