Weather in Casablanca in September

Prime time. September is about as good as Casablanca gets. Highs average 29.1 °C, lows 20.2 °C, and rain falls on 4 days — nothing in the month is working against you.

Casablanca barely has seasons. September scores 83 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. Pack for 29.1 °C days and 20.2 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 9 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest September day reached 41 °C and the coldest night fell to 16.3 °C, and the wettest single day dropped 102 mm — roughly 262% of the month's rain in one day.

This is the volatile part. September rainfall has ranged from 0 mm to 442 mm across the twenty years measured — a 442 mm spread around an average of 39 mm. The average is real but almost no individual September looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 10 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 72%.

How September sits in the year

The month is on the way down: 2 °C cooler than August, with October dropping another 2.3 °C. The first week and the last are not the same trip.

Daylight in September

12.4 hours of daylight, losing 1 hours across the month. That is between Casablanca's extremes of 14.4 and 9.9 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 23.4 °C in September — comfortable for a proper swim. This is the warmest the water gets all year.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

September in Casablanca versus nearby

If Casablanca is one option among several, the nearby comparison is worth making. Marrakesh is the weaker option in September — 6.1 °C warmer, 1 day less rain. Fes is the weaker option in September — 4.7 °C warmer, 1 day more rain.

So: September works, with June the better month by 10 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Casablanca

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