The best time to go to Ax-Les-Thermes largely depends on whether you're seeking winter sports or warm-weather activities, with the peak seasons being December to March for skiing and July to August for summer holidays.
For those interested in skiing and snowboarding, the winter months from December to March offer the best conditions. The resort of Ax 3 Domaines, accessible via a gondola from the town centre, provides a range of slopes for all abilities. During this period, the town is bustling with visitors enjoying the snow, and the thermal baths offer a welcome relaxation after a day on the pistes.
If you prefer hiking, cycling, or exploring the Pyrenean landscape, the summer months of July and August are ideal. The weather is generally warm and sunny, superb for outdoor pursuits. The town's parks and riverside areas are popular, and many trails open up for walkers. While still popular, the town has a different, more relaxed feel compared to the busy winter season.
Should you wish to avoid the busiest crowds but still enjoy pleasant weather, the shoulder seasons of May, June, and September offer a good balance. The temperatures are mild, making it comfortable for walking and exploring, and you'll find the town a bit quieter.