Weather in Mombasa, Kenya

Weather — Mombasa, Kenya

Mombasa has a tropical, coastal climate: hot and humid year‑round with warm seas and two rainy seasons. The long rains peak in April–May and a shorter wetter period appears around October–November, while June–September are noticeably cooler and drier. Sea temperatures stay inviting (about 25–29 °C) so swimming and snorkeling are possible any time of year, but expect very strong sun (UV 10–11) and high humidity for most months. If you’re booking flights, aim for the drier months (July–September) for beach time and more reliable weather.

Weather in Mombasa — January

January is hot and very humid with an average high around 32 °C and low near 24 °C. Rain is limited (about 5 days with some rain and ~29 mm reported by travel metrics), so it’s a good month for beach activities. Sea temperature is pleasant (~27 °C) and sun hours are high, but bring sun protection for strong UV.

Weather in Mombasa — February

February stays hot (avg high ~33 °C, low ~24 °C) with very high humidity. Rain is minimal (around 3 rainy days and roughly 17 mm on travel estimates), making it another reliable month for seaside plans and excursions.

Weather in Mombasa — March

March is among the hottest months (avg high ~33 °C, low ~25 °C) and humidity remains very high. Rain increases as the long rains approach (about 7 rainy days, ~58 mm on travel records), so expect occasional heavy showers but plenty of warm, sunny interludes. Sea temperature rises to about 28 °C.

Weather in Mombasa — April

April marks the start of the long rains: temperatures are still warm (avg high ~31 °C, low ~24 °C) but rainfall jumps (around 14 rainy days and ≈176 mm by travel estimates). Showers can be heavy and persistent, though there are still dry, humid intervals; sea temperature peaks near 29 °C.

Weather in Mombasa — May

May is typically the wettest month with frequent heavy rain (about 19 rainy days and ~275 mm recorded by travel data). Temperatures are slightly lower but remain warm (avg high ~29 °C, low ~23 °C). Swimming is still possible thanks to a sea around 28 °C, but expect interruptions from prolonged showers.

Weather in Mombasa — June

June brings a break from the heaviest rains: it’s a bit cooler (avg high ~28 °C, low ~22 °C) with moderate rain (about 13 rainy days and ~104 mm). Humidity moderates to 'medium' levels and winds pick up slightly, making conditions pleasant for outdoor activities and travel.

Weather in Mombasa — July

July is among the coolest and driest months (avg high ~27 °C, low ~21 °C) with roughly 14 days of some rain but lower monthly totals (~83 mm). Sea temperature drops slightly to about 26 °C—ideal for visitors wanting milder heat and more consistent beach weather.

Weather in Mombasa — August

August is similar to July: mild for the region (avg high ~28 °C, low ~21 °C) and relatively dry (around 13 rainy days and ~64 mm). Pleasant sea (≈25 °C) and comfortable humidity make August a strong choice for beach holidays and outdoor excursions.

Weather in Mombasa — September

September remains warm (avg high ~28 °C, low ~22 °C) with moderate rainfall returning (about 12 rainy days and ~66 mm). Days are sunny enough for beach time, and sea temperatures recover to around 25 °C—an excellent shoulder‑season option.

Weather in Mombasa — October

October signals the start of the short rains: temperatures rise again (avg high ~30 °C, low ~23 °C) while rainfall increases (roughly 12 rainy days and ~89 mm). Expect more frequent showers mixed with sunny periods; sea stays warm (≈26 °C).

Weather in Mombasa — November

November is warm and humid with the short‑rain season in full effect (around 12 rainy days and ~96 mm). Avg highs near 31 °C and lows around 24 °C keep conditions tropical; the ocean hovers near 27 °C, so swimming remains comfortable between showers.

Weather in Mombasa — December

December is hot and very humid again (avg high ~31 °C, low ~24 °C) with moderate rainfall (about 12 rainy days and ~63 mm by travel metrics). Sea temperature is pleasant (~28 °C) and daylight hours are long—great for holiday travel if you don’t mind humidity.

Table with temperatures during the year