Other facts from our historical weather data: Which is the warmest month in Vika? July has an average maximum temperature of 20°C (68°F) and is the warmest month of the year. Which is the coldest month in Vika? The coldest month is January with an average maximum temperature of -3°C (27°F). Which is the wettest month in Vika? August tops the wettest month list with 115mm (4.5 in) of rainfall. Which is the driest month in Vika? March is the driest month with 48mm (1.9 in) of precipitation. Which is the sunniest month in Vika? June is the sunniest month with an average of 243 hours of sunshine. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.