Weather is probably a major factor when you plan your trip to Gulu, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually February and January, with an average temperature of 26°C, while the coldest months are July and August, with an average of 22°C. The rainiest months in Gulu are April, October, August and May, with each month seeing an average of 222 mm of rainfall.