Best Time to Visit Biarritz: Surf Swells & Basque Fêtes

The best time to visit Biarritz is May, June or September, when temperatures sit between 17-22°C (63-72°F), the Atlantic is calm enough for swimming, and the town hasn’t yet filled with August traffic. Peak season runs July and August, when prices and crowds both climb sharply. Winter is mild for France’s west coast but wet and windy, best suited to surfers chasing big swells and travellers who prefer their towns uncrowded.

Here is what trips people up: they assume Biarritz, being in the south of France, behaves like the Mediterranean. It does not. This is the Atlantic, and the Atlantic has opinions. Biarritz sits on the Bay of Biscay, not the Côte d’Azur, which means the sea is cooler, the weather turns on a sixpence, and a blue morning sky is no guarantee of a blue afternoon. Pack accordingly – a stylish raincoat is as useful here as sunglasses, often on the same day. Once you accept this, Biarritz becomes one of the more rewarding coastal towns in France to visit well outside the summer crush, as we cover in more depth in the Biarritz Travel Guide.

Best Time to Visit Biarritz: At a Glance

May to June and September offer the best balance of warmth, lower prices and manageable crowds. July and August are hottest and busiest, with the Grande Plage at its most crowded and hotel rates at their highest. Autumn brings the famous surf swells and quieter streets. Winter is mild by northern European standards but genuinely wet, with storm-watching and golf among the main draws.

Biarritz in Spring (March to May): Weather, Crowds & Tips

Spring arrives slowly on this stretch of coast. March can still feel raw, with daytime highs around 13°C (55°F) and the wind doing most of the talking. By May, temperatures climb to a more agreeable 17-19°C (63-66°F), hydrangeas start appearing in gardens, and the town visibly shakes off its winter quiet. Rain remains a regular visitor throughout spring, so a week of sunshine is a bonus rather than a given.

Crowds stay light except around Easter, when French families take short breaks and prices tick upward briefly. Golf courses are in excellent condition, the Basque markets are back in full swing, and restaurant terraces reopen without the August scramble for a table. Spring suits travellers who want walking weather, good light for photography along the Côte des Basques, and a Biarritz that still feels like a working seaside town rather than a stage set.

Biarritz in Summer (June to August): Weather, Crowds & Tips

This is Biarritz at its most sociable and, frankly, its most crowded. June is the gentler entry point, with highs of 21°C (70°F) and sea temperatures finally warm enough for swimming without wincing. July and August push air temperatures to 23-25°C (73-77°F), occasionally higher during heatwaves, while the Grande Plage fills with parasols by mid-morning.

August is when France itself goes on holiday, and Biarritz absorbs a fair share of that migration. Parking becomes a competitive sport, restaurant bookings matter, and the coast road can crawl at peak hours. Surf schools run at full capacity, beach clubs are busy from breakfast onward, and the town’s nightlife is at its liveliest. Summer suits families wanting reliable beach weather and travellers happy to trade solitude for atmosphere – just book accommodation and restaurant tables well ahead, and don’t expect a quiet corner of sand to yourself.

Biarritz in Autumn (September to November): Weather, Crowds & Tips

September is, by most honest accounts, the best month on this coast. The sea has had all summer to warm up, air temperatures hover around 21°C (70°F), the school-holiday crowds have gone home, and hotel rates ease off noticeably. It is also when the Atlantic begins delivering the swells Biarritz built its surfing reputation on – this town has been a serious surf destination since the sport arrived in Europe here in the 1950s, and autumn is when the waves earn that history.

October stays mild, around 17°C (63°F), though rain becomes more frequent and the days noticeably shorter. By November, temperatures drop to 13°C (55°F) and storms start rolling in off the bay with real conviction. Autumn suits surfers, walkers who don’t mind a damp jacket, and anyone who’d rather watch waves than queue for a sun lounger.

Biarritz in Winter (December to February): Weather, Crowds & Tips

Winter here is mild rather than cold – daytime highs typically sit around 11-13°C (52-55°F) – but wet, often dramatically so. This is the season of Atlantic storms, when the Rocher de la Vierge gets properly battered by waves and watching the spectacle from a café window becomes a legitimate local pastime. Unlike some purely seasonal resorts, Biarritz doesn’t fully shut down – cafés, markets and spas stay open year-round, and the town’s thalassotherapy tradition (genuinely born on this coast) means a fair number of visitors come precisely for the off-season calm and the hot seawater treatments.

Crowds are at their thinnest, prices at their lowest, and the famous beaches take on a bracing, slightly operatic quality that summer visitors never see. Winter suits travellers chasing value, golfers (the courses stay playable), storm-watchers, and anyone who finds an empty Grande Plage more interesting than a full one.

Shoulder Season in Biarritz: Why September and October Win

If pressed for a single answer, most seasoned visitors land on September and early October. The sea is at its warmest of the year, having spent all summer heating up while tourists were busy elsewhere arguing over parasol space. Crowds have thinned considerably once French schools reopen, which also means restaurants are easier to book and prices soften from August’s peak.

Shoulder season is also when the town’s rhythm becomes visible again – local life resumes, markets feel less like performances and more like actual commerce, and the surf crowd starts arriving for the autumn swells, adding a nice buzz of anticipation without the full summer density. The trade-off is a shorter daylight window and the increasing likelihood of rain by late October, but for many travellers that’s a fair exchange for empty beaches and lower bills.

Off-Season Biarritz: The Case for Winter

There’s a reasonable argument that winter is when Biarritz shows its actual character, rather than its summer costume. The storms are genuinely worth seeing – locals gather along the seafront specifically to watch waves detonate against the rocks, which says something about how comfortable this town is with weather that would send other resorts into hibernation. Prices for everything from hotels to golf tee times drop meaningfully, and the famous beaches, usually invisible under towels, reappear as actual beaches.

It isn’t for everyone – pack proper waterproofs, expect short days, and don’t plan a beach holiday in the conventional sense. But for travellers who want a quieter, cheaper, more contemplative version of Biarritz, with spa afternoons and long lunches replacing beach time, winter earns its case.

If you’re working out where to stay for any of these seasons, this overview of villas in Biarritz is a useful next step.

Biarritz Weather and Seasons FAQs