The best time to visit Tarnos is generally from late spring to early autumn, specifically May through to September, when the weather is warm and pleasant.For those looking to enjoy the beach and water activities, July and August are ideal. During these months, the Atlantic waters are at their warmest, great for swimming, surfing, and paddleboarding. The beach areas, like those near Plage du Métro, are at their most active with facilities open and various watersports available.If you prefer a quieter experience with comfortable temperatures for exploring the local area and cycling along the coastal paths, May, June, and September are excellent choices.