Log visit
France
Cassis weather by month
Historical averages 2016–2025 · not a forecast
Loading your weather period…
When is the best time to visit Cassis?
For a warm holiday, the best week has been 20–26 June (Weather Index 98). Favourable start dates for a 7-day trip run from 14 June to 26 July. July and August are warmest (28°C), July is driest and June and July have the most sun.
- Warmest
- July and August 28°C
- Coolest
- January 12°C
- Driest
- July 6% rain-day chance
- Wettest
- November 36% rain-day chance
- Sunniest
- June and July 14 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Cassis
Cassis historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 12.2 | 7.1 | 24.2 | 7.5 | 49.0 | 7.6 |
| February | 13.3 | 7.8 | 26.1 | 7.3 | 53.6 | 8.5 |
| March | 14.8 | 9.0 | 23.5 | 7.3 | 61.3 | 10.2 |
| April | 17.1 | 11.2 | 27.3 | 8.2 | 52.7 | 11.4 |
| May | 20.3 | 14.4 | 30.0 | 9.3 | 54.1 | 12.7 |
| June | 25.1 | 19.1 | 17.7 | 5.3 | 26.6 | 14.2 |
| July | 27.7 | 21.4 | 6.5 | 2.0 | 11.6 | 14.1 |
| August | 27.9 | 21.4 | 7.4 | 2.3 | 23.1 | 12.8 |
| September | 24.4 | 18.4 | 19.0 | 5.7 | 56.5 | 11.1 |
| October | 20.7 | 15.2 | 24.8 | 7.7 | 92.6 | 9.2 |
| November | 15.8 | 10.7 | 36.0 | 10.8 | 102.2 | 7.6 |
| December | 13.2 | 8.1 | 26.5 | 8.2 | 71.5 | 7.3 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.