Other facts from our historical weather data: Which months have the greatest rainfall in Kaupanger? Most rainfall (rainy season) is seen in January and December. Which is the warmest month in Kaupanger? July has an average maximum temperature of 18°C (64°F) and is the warmest month of the year. Which is the coldest month in Kaupanger? The coldest month is December with an average maximum temperature of -1°C (30°F). Which is the wettest month in Kaupanger? December tops the wettest month list with 160mm (6.3 in) of rainfall. Which is the driest month in Kaupanger? April is the driest month with 88mm (3.5 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.