Mombasa Weather in September: What to Expect
In September, Mombasa averages highs of 27.3°C and lows of 23.3°C, with about 20 rainy days (~71 mm). Verdict: Wet season — plan around rain — ~20 rainy days this month. That makes it the 4th hottest of Kenya's 6 main cities this month.
Mombasa vs other Kenya cities in September
Kenya is not one climate. In September, Amboseli runs to 29.4°C while Lake Nakuru sits at 24.4°C — a 5°C spread. Here is where Mombasa falls:
| City | Avg high | Avg low | Rainy days |
|---|---|---|---|
| Amboseli | 29.4°C | 16.4°C | 3 |
| Masai Mara | 28.5°C | 15.3°C | 6 |
| Diani Beach | 27.4°C | 23°C | 22 |
| Mombasa | 27.3°C | 23.3°C | 20 |
| Nairobi | 25.1°C | 13.4°C | 7 |
| Lake Nakuru | 24.4°C | 13.1°C | 11 |
What to pack for Mombasa in September
With highs near 27.3°C and lows around 23.3°C, pack light summer clothing plus a thin layer for evenings, a compact umbrella or rain shell.
Mombasa is on the coast — add swimwear; sea conditions are pleasant for swimming this month.
What to do in Mombasa in September
With 27.3°C midday highs, start outdoor sights early and keep afternoons for shaded or indoor stops. Top sights:
Mombasa in September — FAQs
What is the weather like in Mombasa in September?
In September, Mombasa averages daytime highs of 27.3°C and overnight lows around 23.3°C, with roughly 20 rainy days and about 71 mm of rain across the month. Wet season — plan around rain — ~20 rainy days this month.
Is September a good time to visit Mombasa?
Wet season — plan around rain. Plan outdoor sights for early morning and keep midday for indoor or shaded activities. Among Kenya's cities, Mombasa is the 4th hottest this month.
What should I pack for Mombasa in September?
For September (23.3–27.3°C), pack light summer clothing plus a thin layer for evenings, a compact umbrella or rain shell.
What is there to do in Mombasa in September?
Mombasa's main sights include Fort Jesus Museum, Ruins of Gedi, Arabuko Sokoke National Park, Watamu Marine National Park. Time outdoor sites for early morning given the midday heat.
Mombasa weather by month: