Other facts from our historical weather data: Which is the hottest month in Assab? July has an average maximum temperature of 36°C (97°F) and is the hottest month of the year. Which is the coolest month in Assab? The coolest month is January with an average maximum temperature of 29°C (84°F). Which is the wettest month in Assab? August tops the wettest month list with 18mm (0.7 in) of rainfall. Which is the driest month in Assab? June is the driest month with 1mm (0 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.