Other facts from our historical weather data: Which is the warmest month in Tveit? August has an average maximum temperature of 18°C (64°F) and is the warmest month of the year. Which is the coldest month in Tveit? The coldest month is February with an average maximum temperature of 4°C (39°F). Which is the wettest month in Tveit? December tops the wettest month list with 299mm (11.8 in) of rainfall. Which is the driest month in Tveit? May is the driest month with 127mm (5 in) of precipitation. Which is the sunniest month in Tveit? June is the sunniest month with an average of 193 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.