Weather in Mombasa in January

A hard month. January is a hard month in Mombasa, and worth planning around. Daytime highs average 35.8 °C and the afternoon is not negotiable — outdoor plans move to early morning or evening.

January ranks 6 of 12 in Mombasa: past the worst of the year but short of July, which is the month to book if the dates are open.

Rain falls on only 6 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for heat management rather than style: shade, water, and a schedule that gives up on the middle of the day.

What the averages hide

Averages flatten a month, and this one hides a few things: 22 days of the month clear 35 °C — that is not a heatwave, it is the month. Across the twenty years measured, the hottest January day reached 39.2 °C and the coldest night fell to 21.5 °C, and the wettest single day dropped 25 mm — roughly 100% of the month's rain in one day.

This is the volatile part. January rainfall has ranged from 2 mm to 94 mm across the twenty years measured — a 92 mm spread around an average of 25 mm. The average is real but almost no individual January 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 69%.

How January sits in the year

Temperatures hold steady either side: 34.1 °C in December, 35.8 here, 36.6 in February. Nothing about the timing within the month matters much. Rain has already shifted: 9 days fewer than December had.

Daylight in January

Mombasa sits close enough to the equator that daylight barely moves all year — 12.3 hours in January, against a range of just 0.5 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 28.3 °C in January — warm enough that the water offers no relief from the heat. The sea peaks at 29.4 °C in April and bottoms out at 25.7 °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.

January in Mombasa versus nearby

If Mombasa is one option among several, the nearby comparison is worth making. Zanzibar is a better bet in January — 6.3 °C cooler, 6 days more rain. Dar es Salaam is a better bet in January — 5.7 °C cooler, 10 days more rain.

So: January is a compromise. July is 27 points better and is what Mombasa 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 Mombasa

See all twelve months in Mombasa, or where else to go in January.