Taking into account the local weather in Bản Gùm can help you maximize your time at the pool during your trip. The hottest months are usually July and June with an average temp of 78°F, while the coldest months are January and December with an average of 59°F. The rainiest months in Bản Gùm are June, August, July, and May, with each month seeing an average of 12 inches of rainfall.