Weather can make or break a road trip, so here's some data about year-round temperatures in Valka to help you plan yours: The hottest months are usually July and August, with an average temperature of 16°C, while the coldest months are January and February, with an average of -3°C. The snowiest months in Valka are November, December, February and April, with each month seeing an average of 22 cm of snowfall.