Visiting local bars in Cuilapa is more fun when the weather is good. These rainfall averages and temperatures can help you choose the best time for bar-hopping. The hottest months are usually April and March, with an average temperature of 20°C, while the coldest months are January and December, with an average of 18°C. The rainiest months in Cuilapa are September, June, May and August, with each month seeing an average of 407 mm of rainfall.