Planning for the weather is a good way to make your trip to San Roque relaxing and enjoyable, especially when you’re splurging. The hottest months are usually July and August with an average temp of 83°F, while the coldest months are February and March with an average of 81°F. The rainiest months in San Roque are August, October, September, and July, with each month seeing an average of 15 inches of rainfall.