Other facts from our historical weather data: Does Juba have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Juba? February has an average maximum temperature of 39°C (102°F) and is the hottest month of the year. Which is the coolest month in Juba? The coolest month is August with an average maximum temperature of 31°C (88°F). Which is the wettest month in Juba? October tops the wettest month list with 187mm (7.4 in) of rainfall. Which is the driest month in Juba? January is the driest month with 5mm (0.2 in) of precipitation. Which is the sunniest month in Juba? January is the sunniest month with an average of 279 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.