Weather in Mwanza in December

A good month. December works. It is not the peak, but nothing about it fights you. You should expect rain on 25 days of the month, which is more days wet than dry.

December ranks 8 of 12 in Mwanza: past the worst of the year but short of July, which is the month to book if the dates are open.

Rain on 25 of the month's 31 days, 3 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. 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: the day barely swings — 5.8 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest December day reached 33.1 °C and the coldest night fell to 17.9 °C, and the wettest single day dropped 60 mm — roughly 44% of the month's rain in one day.

December is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest December on record still delivered 280 mm against 54 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 137 mm average is a reasonable planning figure, not a promise.

Wind is light at 8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 71%.

How December sits in the year

Temperatures hold steady either side: 27 °C in November, 26.5 here, 27.2 in January. Nothing about the timing within the month matters much. Rain is the thing that moves: January brings 6 days less of it, so pushing the dates later buys drier weather.

Daylight in December

Mwanza sits close enough to the equator that daylight barely moves all year — 12.3 hours in December, against a range of just 0.3 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

An inland climate

Despite being inland, the year stays fairly even: 11.8 °C between the year's warmest afternoons and coldest nights. At 1144 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly.

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 Mwanza versus nearby

If Mwanza is one option among several, the nearby comparison is worth making. Kakamega is a better bet in December — within a degree on temperature, 12 days less rain. Nakuru is close enough to be a coin toss — within a degree on temperature, 9 days less rain.

So: December is a compromise. July is 20 points better and is what Mwanza is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Mwanza

See all twelve months in Mwanza, or where else to go in December.