Nairobi Weather in September
September in Nairobi averages 26°C (79°F) during the day and 14°C (57°F) at night. The perfect conditions and low rainfall make it a solid month to visit.
Rainfall in Nairobi in September
Climate statistics over the past 30 years suggest around 5 days of rain, with 18 mm (0.7 in) average for the month. Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.
Temperature in Nairobi in September
Nairobi in September has perfect weather. Days reach 26°C (79°F) and nights cool to 14°C (57°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 14°C (57°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Nairobi in September
With about 171 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.
Wind Speed in Nairobi in September
Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.If your ideal day consists of dry skies and pleasant temperatures, January, February, March, May, June, July, August, September, October and December typically offer the best circumstances for Nairobi.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Kenya, check out our Nairobi's climate page.
Nairobi Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
26°C (79°F)
Chance of Rain
15%
Precipitation
18 mm (0.7 in)
Rainy days
5 days
Humidity
67%
Windspeed
3 m/s (6 knots)
Sunshine
171 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Nairobi typically stay consistent throughout September, with daily highs averaging around 26°C (79°F). Nights are cool, with lows around 13°C (55°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Nairobi in September
Browse day-by-day weather records for Nairobi spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Nairobi historical weather extremes in September
According to our 49 years of weather records for Nairobi, the following extremes were recorded between 1976 and 2025.
- The warmest day in September was on September 25, 2007, with a maximum of 31°C (88°F).
- The lowest daytime temperature in September was 12°C (54°F), recorded on September 2, 1976.
- The lowest overnight temperature recorded in September was 6°C (43°F) (September 23, 1983).
Best Places in Kenya in September
Find out more about the weather in Kenya and which places have the best travel conditions in this month. See all of Kenya in September →
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tolerable
unpleasant
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What to Wear in Nairobi in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Nairobi in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Kenya, check out our Nairobi's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Nairobi climate overview or explore weather in Kenya.
