Visiting local bars in Monywa is better in good weather. These rainfall averages and temperatures can help you decide the best time for bar hopping. The hottest months are usually April and May with an average temp of 89°F, while the coldest months are January and December with an average of 74°F. The rainiest months in Monywa are September, August, October, and July, with each month seeing an average of 8 inches of rainfall.