WanderWhen

Nairobi weather in September

September is one of the best months to visit Nairobi. Expect highs around 25°C, lows near 13°C, and about 7.8 days with rain.

9.7 · Excellenttravel score for September
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
25°C
Avg low
13°C
Rainfall
41 mm
Rain days
7.8
Sunshine
9.7 h/day
Daylight
12 h

What to pack for Nairobi in September

  • t-shirts and light layers
  • a light jacket for evenings
  • a packable rain layer

Humidity averages 68%; max daily wind around 12 km/h.

How September compares

January: 9.1/10 JFebruary: 9.3/10 FMarch: 8.7/10 MApril: 7.5/10 AMay: 7.5/10 MJune: 9.3/10 JJuly: 10.0/10 JAugust: 9.3/10 ASeptember: 9.7/10 SOctober: 8.0/10 ONovember: 7.4/10 NDecember: 7.5/10 D

Best months in Nairobi: February & June–September. See the full best time to visit Nairobi guide.

Nairobi in September: the details

In September, Nairobi sees average daytime highs of 25°C (77°F) and overnight lows of 13°C (56°F). Rainfall totals roughly 41 mm across 7.8 rainy days, and the sun shines about 9.7 hours per day with 12 hours of daylight mid-month. Relative humidity averages 68%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Nairobi, Kenya (-1.28, 36.82) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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