Taking the local weather in Rio dos Cedros into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually February and January, with an average temperature of 23°C, while the coldest months are July and June, with an average of 16°C. The rainiest months in Rio dos Cedros are January, February, March and December, with each month seeing an average of 213 mm of rainfall.