Other facts from our historical weather data: Does Ilulissat have a dry season? Yes, the months of January, February and March are very dry. Which is the warmest month in Ilulissat? July has an average maximum temperature of 14°C (57°F) and is the warmest month of the year. Which is the coldest month in Ilulissat? The coldest month is February with an average maximum temperature of -13°C (9°F). Which is the wettest month in Ilulissat? August tops the wettest month list with 49mm (1.9 in) of rainfall. Which is the driest month in Ilulissat? February is the driest month with 15mm (0.6 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.