Vík í Mýrdal, where it's located

The climate of Vík í Mýrdal is subpolar oceanic, with cold winters and very cool summers.
The city is located on the southern coast of Iceland, south of Katla volcano, and is the mildest and wettest city in the country.
The average temperature of the coldest month (February) is of 1.6 °C (35 °F), that of the warmest month (July) is of 11.2 °C (52 °F). Here are the average temperatures.
Vík - Average temperatures
Min (°C)-1-1-114799631-1
Max (°C)44571012141411854
Min (°F)303030343945484843373430
Max (°F)393941455054575752464139

Precipitation amounts to 2,420 millimeters (95.3 inches) per year: it is therefore definitely abundant. It ranges from 140 mm (5.5 in) in the driest month (May) to 250 mm (9.8 in) in the wettest (October). Here is the average precipitation.
Vík - 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.
Vík - Sea temperature
Temp (°C)77778101112111088
Temp (°F)454545454650525452504646

Vík í Mýrdal

Best Time

The best time to visit Vík í Mýrdal 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.