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Cassis climate by month
What the weather is like
Cassis has a hot-summer Mediterranean climate (Köppen Csa): dry, sunny summers and mild, wetter winters.
The warmest month is August, when afternoons average 29° and nights 19°. January is the coolest month, with highs of 13° and lows of 5°. The difference between the warmest and the coolest month is about 15°.
About 659 mm of precipitation falls in an average year. November is the wettest month (84 mm, 9 wet days) and July the driest (11 mm, 3 wet days). Cloud cover ranges from 11% in July to 31% in October.
The sea reaches about 23° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Paris, the capital, Cassis is 3° warmer on a August afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 29° · August
- Coldest nights
- 5° · February
- Wettest month
- November
- Driest month
- July
- Clearest skies
- July · 11% cloud
- Warmest sea
- 23° · August
- Longest day
- 15 h 22 min
- Shortest day
- 9 h 00 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 13° | 14° | 16° | 18° | 22° | 26° | 29° | 29° | 25° | 21° | 16° | 13° |
| Average low | 5° | 5° | 7° | 9° | 13° | 16° | 19° | 19° | 16° | 13° | 9° | 6° |
| Precipitation | 65 mm | 40 mm | 39 mm | 62 mm | 50 mm | 28 mm | 11 mm | 30 mm | 85 mm | 90 mm | 84 mm | 75 mm |
| Wet days (≥1 mm) | 7.1 | 6.2 | 6 | 7.5 | 7.2 | 4.7 | 2.5 | 3.8 | 6.2 | 7.8 | 9.1 | 6.8 |
| Cloud cover | 29% | 28% | 28% | 30% | 29% | 20% | 11% | 15% | 21% | 31% | 31% | 31% |
| Sea temperature | 14° | 13° | 13° | 14° | 17° | 20° | 22° | 23° | 21° | 19° | 17° | 15° |
| Daylight | 9h 20 | 10h 32 | 11h 53 | 13h 23 | 14h 40 | 15h 22 | 15h 05 | 13h 59 | 12h 32 | 11h 05 | 9h 44 | 9h 00 |
| Month score | 56 | 62 | 76 | 82 | 83 | 84 | 79 | 74 | 85 | 81 | 69 | 59 |