Weather can make or break a road trip, so we've gathered some data about year-round temperatures in Sekong to help you plan yours. The hottest months are usually March and April, with an average temperature of 26°C, while the coldest months are January and December, with an average of 22°C. The rainiest months in Sekong are September, July, August and June, with each month seeing an average of 359 mm of rainfall.