If you're hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Bungoma: The hottest months are usually February and March, with an average temperature of 21°C, while the coldest months are June and July, with an average of 19°C. The rainiest months in Bungoma are April, May, November and October, with each month seeing an average of 244 mm of rainfall.