Visiting local bars in Yapahuwa is more fun when you know what the weather holds. These rainfall averages and temperatures can help you choose the best time for bar hopping. The hottest months are usually April and May with an average temp of 81°F, while the coldest months are January and February with an average of 76°F. The rainiest months in Yapahuwa are November, December, October, and January, with each month seeing an average of 9 inches of rainfall.