Weather in Mombasa

Mombasa is in Kenya at 4.1°S. The 2001–2020 NASA POWER daily record describes a mild oceanic climate. February is the warmest month (average 29.8°C, high 35.5°C) and July is the coolest (average 24.7°C, low 20.8°C).

Rain is rainy season runs from April to May, inside an annual total of 894 mm. The wettest month is May at 217 mm; the driest is February at 15 mm. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are February, July, and August.

Best months to visit Mombasa

The three months with the highest comfort score are February, July, and August: February (29.8°C average, 15 mm, 67% humidity); July (24.7°C average, 36 mm, 75% humidity); August (25.2°C average, 29 mm, 73% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the rainy season itself — fewer crowds, greener landscape, heavier rain — aim at April–May instead of the score.

How warm Mombasa gets

The heat peaks in February, when the typical afternoon is 35.5°C. The opposite pole is July, when mornings average 20.8°C.

Mean high across all twelve months is 31.6°C and mean low is 22.7°C. These are 20-year grid averages, so a city station can read a few degrees warmer or cooler.

When Mombasa gets wet

The rainy season in Mombasa starts in April and ends in May (April and May). May is the core of it at 217 mm. February is the other extreme, with 15 mm.

A rainy day here is a day with at least 1 mm in the NASA POWER series. May averages 23 such days; February averages 3.

The calendar in Mombasa

Peak heat arrives in February: 35.5°C by day, 24.0°C at night, and 67% humidity. The rainy season opens in April. Expect 129 mm and 24 rainy days, with nights around 24.0°C. May closes the rainy season: 217 mm over 23 rainy days, then the calendar dries.

June brings 74 mm and 13 rainy days; temperatures run from 21.5°C to 28.6°C. The year bottoms out in July. Plan for 20.8°C at night and 28.6°C in the afternoon. In October, Mombasa averages 31.6°C by day and 22.2°C at night, with 98 mm of rain.

How Mombasa compares inside Kenya

Nairobi is about 442 km away: Mombasa is 7.4°C warmer than Nairobi in its hottest month and 292 mm wetter over the year than Nairobi. Nairobi’s wettest month is April (114 mm) versus May here.

Kakamega is about 728 km away: Mombasa is 8.4°C warmer than Kakamega in its hottest month and 1056 mm drier over the year than Kakamega. Kakamega’s wettest month is April (275 mm) versus May here.