Taking the local weather in Riddes 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 July and August, with an average temperature of 14°C, while the coldest months are January and February, with an average of -2°C. The rainiest months in Riddes are May, July, December and August, with each month seeing an average of 187 mm of rainfall.