Sun, sea & sand

Cassis weather in April

Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.

32

Holiday weather in April

Poor

Best time to visit: July – August

What is the weather like in Cassis in April?

In April, Cassis is mild: daytime highs average 17 °C, and nights cool down to about 11 °C. The sea averages 14.5 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 58 mm. All in all, April is not an ideal month for a holiday in Cassis.

April compared

How the weather changes from March to May. Tap a month to open it.

MarchMarAprilAprMayMay
Score323241
Day14°17°20°
Night8°11°14°
Sea14°15°17°
Sun8 h8 h10 h
Rain days687

More details for April

Daylight
13 h 22 min06:57 – 20:19
UV index
7 · highclear sky, noon (estimate)All months
Muggy days
0 daysdew point 18 °C or moreAll months
Wind
21 km/haverage daily peakAll months
Cloud cover
48 %on averageAll months
Hot days
0 days30 °C or moreAll months
Time zone
UTC+2Europe/Paris

How the score comes together

  • Temperatureweight 35 %0 %
  • Seaweight 25 %0 %
  • Sunshineweight 20 %88 %
  • Few rainy daysweight 20 %72 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.

What to pack in April

  • Sunscreen
  • Sunglasses & sun hat
  • A jumper for the evenings

Cassis in April: quick answers

Is Cassis hot in April?

No. In April, Cassis is mild: daytime highs average 17 °C and nights drop to about 11 °C.

Can you swim in Cassis in April?

Only if you don't mind cold water: in April the sea averages just 14.5 °C. Comfortable swimming is possible from June to September.

Does it rain much in Cassis in April?

Rain falls on about 8 days, adding up to 58 mm.

Cassis month by month

Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences