The best months to visit Aix-en-Provence are April, May, June, September and October, when average highs land in the comfortable low-to-high 20s without the midsummer glare. September is a standout, with highs of 25.3 °C and just 5 rain days, while April (18.5 °C, 8 rain days) and October (20.7 °C) bookend the season pleasantly. July and August are peak: hot at 31.2 °C and 30.8 °C and crowded with school-holiday visitors. Winter is the quiet low season, cool and the least sunny, with January highs of just 10.7 °C.
Best months AprilMayJuneSeptemberOctober
Aix-en-Provence month by month
Average highs and lows (°C), 2016–2025. Highlighted bars are the best months.
| Month | High | Low | Rain days | Sunshine | Days ≥30 °C | Sea | Crowds |
|---|---|---|---|---|---|---|---|
| January | 10.7 °C | 1.7 °C | 7 | ●●●●● | – | 14 °C | ●●●●● |
| February | 12.8 °C | 3.1 °C | 7 | ●●●●● | – | 14 °C | ●●●●● |
| March | 15.3 °C | 4.7 °C | 8 | ●●●●● | – | 14 °C | ●●●●● |
| April | 18.5 °C | 7.6 °C | 8 | ●●●●● | – | 15 °C | ●●●●● |
| May | 22.1 °C | 11.2 °C | 11 | ●●●●● | 1 | 17 °C | ●●●●● |
| June | 28.1 °C | 16.4 °C | 6 | ●●●●● | 10 | 22 °C | ●●●●● |
| July | 31.2 °C | 18.6 °C | 2 | ●●●●● | 23 | 22 °C | ●●●●● |
| August | 30.8 °C | 18.1 °C | 3 | ●●●●● | 20 | 23 °C | ●●●●● |
| September | 25.3 °C | 14.3 °C | 5 | ●●●●● | 3 | 22 °C | ●●●●● |
| October | 20.7 °C | 10.8 °C | 8 | ●●●●● | – | 20 °C | ●●●●● |
| November | 14.5 °C | 5.7 °C | 11 | ●●●●● | – | 17 °C | ●●●●● |
| December | 11.6 °C | 2.6 °C | 8 | ●●●●● | – | 15 °C | ●●●●● |
How the months are picked.A month qualifies when its average high sits in the comfortable 20–28 °C band (scored down towards 9 °C and 37 °C), rain days are few and sunshine hours are high — at least 78 % of the city's best-scoring month. July and August are then set aside as peak season (school-holiday crowds and prices) whenever at least three other months qualify; where summer is the only comfortable window they stay. Figures are ten-year averages (2016-01-01 to 2025-12-31) from ERA5 reanalysis data via Open-Meteo (CC BY 4.0) for the city centre coordinates. Sunshine is shown relative to the city's own year (modelled data overstates absolute hours).Heat and sea: days with a high of 30 °C or more are averaged over 2016–2025 (ERA5); sea-surface temperature is the monthly mean 2022–2025 at the nearest open-sea grid point within about 20 km (Open-Meteo Marine).Crowds:Relative to an average month in the same region (Eurostat nights spent at tourist accommodation, by NUTS 2 region and month) — a measure of season, not of how crowded one city is compared with another. Busiest month August, quietest November; NUTS 2 region FRL0, 2022–2025, Eurostat.
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When to go, and what to expect
Spring (Mar–May)
Ideal for walking the Cours Mirabeau and café terraces before the heat arrives.
Summer (Jun–Aug)
Best for festival-goers who don't mind heat; June is the gentler choice.
Autumn (Sep–Nov)
Arguably the finest window — warm light, fewer visitors, easy sightseeing.
Winter (Dec–Feb)
For those seeking a calm, inexpensive city break without the crowds.
Notable events
- July
- Festival d'Aix-en-Provence (opera and classical music)
- June
- Fête de la Musique
- December
- Santons and Christmas markets
- Spring
- Calissons blessing and spring markets
Frequently asked
Is Aix-en-Provence too hot in August?
It can feel hot: August highs average 30.8 °C and July reaches 31.2 °C, paired with peak crowds. If you prefer milder days, aim for May (22.1 °C) or September (25.3 °C).
What is the rainiest month?
May and November are the wettest, each with 11 rain days. July is the driest at just 2 rain days, followed by August with 3.
Is winter worth visiting?
Winter is quiet and atmospheric but cool, with January highs of 10.7 °C and December the least sunny month. It suits travellers wanting calm streets and festive markets rather than terrace weather.
Know when to go? Now decide where to stay — our Aix-en-Provence area guide →
Areas of Aix-en-Provence
Best time to visit near here
Sources
- Open-Meteo historical weather API — monthly climate normals, 2016–2025 (CC BY 4.0)
- ERA5 reanalysis (ECMWF / Copernicus) — the underlying temperature, precipitation and sunshine data
- ReasonStay methodology — how the best months are computed and checked
An independent guide to Aix-en-Provence — honest, verified, no invented data. Climate figures: ERA5 via Open-Meteo, 2016–2025 averages; the best months are computed from them, not opinion.