Weather in Casablanca in May

Prime time. May is about as good as Casablanca gets. Highs average 25.3 °C, lows 16 °C, and rain falls on 4 days — nothing in the month is working against you.

Casablanca barely has seasons. May scores 92 out of 100 against a best of 93 in June — a gap small enough that the month you choose matters far less here than the week you choose.

Rain falls on only 4 days, so an itinerary with no wet-weather fallback is a reasonable risk. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: 4 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest May day reached 40.8 °C and the coldest night fell to 10.5 °C, and the wettest single day dropped 27 mm — roughly 129% of the month's rain in one day.

This is the volatile part. May rainfall has ranged from 1 mm to 86 mm across the twenty years measured — a 85 mm spread around an average of 21 mm. The average is real but almost no individual May looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 11.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 72%.

How May sits in the year

The month is on the way up: 2.5 °C warmer than April, and June adds another 2.9 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in May

May is at or near the longest days of Casablanca's year: 13.9 hours of daylight, gaining 0.7 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 19.2 °C in May — swimmable, but it takes a moment to commit. The sea peaks at 23.5 °C in August and bottoms out at 16.9 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, July is the trade worth considering — 9 points weaker on weather, and materially quieter.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

May in Casablanca versus nearby

If Casablanca is one option among several, the nearby comparison is worth making. Marrakesh is the weaker option in May — 6.1 °C warmer, 1 day less rain. Fes is the weaker option in May — 3.2 °C warmer, 2 days more rain.

So: May is effectively as good as it gets here — 1 points behind June, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Casablanca

See all twelve months in Casablanca, or where else to go in May.