Saint-Tropez weather in September

September is the month regulars name as the best here: warm, still swimmable, not crowded and not empty, and cheaper the further into it you go. The sea is the reason - they put it around 22C and our column says 23.9C, comfortable enough to hold into early October. Air is 26.8C over 16.9C nights, with 54.7mm of rain across 5.6 days. Two dates shape the month at its end. Les Voiles de Saint-Tropez fills the bay and the town with people who came to watch boats, and from early October some hotel restaurants start closing for the season, so late September sits right at the edge of what is open. The record: humidity 68 percent, 10.5 hours of sun, a 17.1 kph wind and AQI 50.

Regulars fielding late-May beach questions are consistent that sunbathing weather arrives well before swimming weather does, the sea considerably cooler than the air and genuinely too cold for more than a quick dip without a wetsuit even by month's end. Our row backs that mild, still-sunny read, 22.7C over 12.9C nights feeling 12C, with 43.9mm of rain across 8.1 days and humidity at 70 percent. Regulars are consistent this counts as predominantly dry with only occasional light showers on very few days, clear skies the norm rather than the exception. The sea sits at 18.6C, warming toward the high teens by the very end of the month but still a real gap from the warm air. The record: 12.1 hours of sun, an 18 kph wind and AQI 50.

Saint-Tropez-forum threads on Christmas-time weather describe a town almost unrecognizable from its summer self: population dropping to a small fraction of the tens of thousands who fill it in high season, and posters are candid that a real share of shops and restaurants simply close for the winter rather than staying open at reduced hours. Sunshine isn't guaranteed, but genuine clear, crisp stretches are entirely possible mixed in with the grey ones, temperatures mild enough for a coastal walk even on a cloudy afternoon. More than one poster recommends basing a winter trip in nearby Nice instead, where restaurants and holiday activity stay running at full strength, treating Saint-Tropez as a quiet day trip. The near-empty harbor and old town is called an almost eerie experience compared to summer's crush. The record: 14.1C days feeling like 12C, 5.9C nights, 75mm across 7.4 days, 1.3cm of rare snowfall, a 16.1C sea, 77 percent humidity and 6.3 hours of sun.

June in Saint-Tropez is beach and swimming weather without the summer siege. Regulars describe mid-June as sunny and warm with the crowds not yet arrived, and put the end of June just ahead of what they call the unbearable crush of July and August - busy, but cheaper and drivable. Our row gives 28C reading as 30C, 4.1 precipitation days and a 23C sea. The traffic note is the practical one: June runs about an hour and a half from the airport, the peak months can be far worse, and market days are Tuesday and Saturday, when the town clogs. The ferries from Le Lavandou, Cavalaire and La Croix-Valmer are the way in that skips all of it. The record: 18C nights, 22mm of rain and 13.3 hours of sun.

August in Saint-Tropez is a traffic problem with a beach attached, and the forum is unsparing about it: nobody local drives the coast road from Sainte-Maxime between 09:00 and 23:00 in July and August, where eight miles can take three hours. The fix regulars give every time is the bateaux verts - every 20 minutes in high season, 20 minutes across the bay. On Pampelonne the beach clubs run by seating times and want a lunch reservation, with a lounger around 35 euros; Club 55 is the relaxed classic, Les Palmiers the French-leaning one, Nikki Beach the young and loud one. August is when the town is most overrun. The record: 31.4C days feeling like 33C, 20.4C nights, 2.5 precipitation days, 12.4 hours of sun and a 23.9C sea.