Weather in Casablanca in December

Prime time. December is about as good as Casablanca gets. Highs average 19.5 °C, lows 12 °C, and rain falls on 8 days — nothing in the month is working against you.

Casablanca barely has seasons. December 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 on 8 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. 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: it never really gets hot: not one day in an average December reaches 30 °C. Across the twenty years measured, the hottest December day reached 27.7 °C and the coldest night fell to 6.7 °C, and the wettest single day dropped 47 mm — roughly 76% of the month's rain in one day.

December is moderately variable: 0 mm in the driest year against 152 mm in the wettest, around an average of 62 mm. Roughly two Decembers in three land near that average, and the third does something else entirely.

Wind is light at 10.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 77%, high enough to notice on the warm days without dominating them.

How December sits in the year

Temperatures hold steady either side: 22 °C in November, 19.5 here, 18.3 in January. Nothing about the timing within the month matters much.

Daylight in December

December sits at the dark end of Casablanca's year — 9.9 hours of daylight against 14.4 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 18.8 °C in December — 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

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

December in Casablanca versus nearby

If Casablanca is one option among several, the nearby comparison is worth making. Marrakesh is close enough to be a coin toss — within a degree on temperature, 3 days less rain. Fes is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: December 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 December.