Visiting local bars in Decalachao is more fun in good weather. These temperatures and rainfall averages can help you determine the best time for bar hopping. The hottest months are usually April and May with an average temp of 82°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Decalachao are July, August, September, and June, with each month seeing an average of 14 inches of rainfall.