If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Vindafjord: The hottest months are usually July and August with an average temp of 54°F, while the coldest months are February and January with an average of 30°F. The rainiest months in Vindafjord are December, October, November, and September, with each month seeing an average of 11 inches of rainfall.