Taking into account the local weather in Jundiaí do Sul is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually December and November with an average temp of 73°F, while the coldest months are July and June with an average of 65°F. The rainiest months in Jundiaí do Sul are January, February, December, and November, with each month seeing an average of 8 inches of rainfall.