Visiting local bars in Parintins is more fun in good weather. These rainfall averages and temperatures can help you choose the best time for bar hopping. The hottest months are usually September and October with an average temp of 84°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Parintins are April, March, February, and January, with each month seeing an average of 14 inches of rainfall.