Vestmann, where it's located

The climate of the Vestmann Islands is subpolar oceanic, with cold winters and very cool summers.
The Vestmann Islands (Vestmannaeyjar in Icelandic) are located off the southwest coast of Iceland.
The average temperature of the coldest month (February) is of 1.7 °C (35 °F), that of the warmest month (July) is of 10.5 °C (51 °F). Winter is slightly milder even as compared to the south coast of Iceland. Here are the average temperatures of the main island, Heimaey.
Vestmann - Average temperatures
Min (°C)000247996410
Max (°C)4446810121210754
Min (°F)323232363945484843393432
Max (°F)393939434650545450454139

Precipitation amounts to 1,550 millimeters (61 inches) per year: it is therefore abundant. It ranges from 85 mm (3.3 in) in the driest month (June) to 155 mm (6.1 in) in the wettest (December). Here is the average precipitation.
Vestmann - Average precipitation

The sea temperature ranges between 7 °C (45 °F) and 12 °C (54 °F). So, it is cold all year round. Here are the average sea temperatures.
Vestmann - Sea temperature
Temp (°C)77778101112111088
Temp (°F)454545454650525452504646


Best Time

The best time to visit the Vestmann Islands is the summer, from June to August, since it is the mildest season. However, there are often cloudy skies, rain and a bit of cold at night.