The best time to go to Campan for pleasant weather and outdoor activities is during late spring, summer, and early autumn, specifically from May to October.During these months, you'll experience warmer temperatures and less rainfall, making it ideal for exploring the natural beauty of the Pyrenees. May and June offer lush greenery and blooming wildflowers, great for hiking and enjoying the scenery before the peak summer crowds.July and August are the warmest months and are best for those who want to fully enjoy all outdoor pursuits, including hiking, cycling, and exploring the high mountain passes. The days are long, and the weather is generally stable, though you should always be prepared for sudden changes in mountain conditions.September and October bring cooler, crisp air and often stunning autumn foliage, particularly in the lower valleys.