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 Mbeya: The hottest months are usually October and September, with an average temperature of 19°C, while the coldest months are July and June, with an average of 16°C. The snowiest months in Mbeya are March, January, February and April, with each month seeing an average of 20 cm of snowfall.