If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Abomey-Calavi: The hottest months are usually March and January, with an average temperature of 28°C, while the coldest months are August and July, with an average of 26°C. The rainiest months in Abomey-Calavi are June, July, May and September, with each month seeing an average of 222 mm of rainfall.