Other facts from our historical weather data: Which is the warmest month in Pajala? July has an average maximum temperature of 21°C (70°F) and is the warmest month of the year. Which is the coldest month in Pajala? The coldest month is January with an average maximum temperature of -7°C (19°F). Which is the wettest month in Pajala? July tops the wettest month list with 91mm (3.6 in) of rainfall. Which is the driest month in Pajala? March is the driest month with 35mm (1.4 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.