Other facts from our historical weather data: Which is the warmest month in Tennevoll? July has an average maximum temperature of 16°C (61°F) and is the warmest month of the year. Which is the coldest month in Tennevoll? The coldest month is January with an average maximum temperature of -4°C (25°F). Which is the wettest month in Tennevoll? September tops the wettest month list with 158mm (6.2 in) of rainfall. Which is the driest month in Tennevoll? April is the driest month with 98mm (3.9 in) of precipitation. 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.