Nairobi
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Nairobi Weather in September

September in Nairobi averages 26°C (79°F) during the day and 14°C (57°F) at night. The excellent 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 excellent 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.

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

Nairobi Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Nairobi - and find the best time to visit.

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 records 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 50 years of weather records for Nairobi, the following extremes were recorded between 1976 and 2026.

  • 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 →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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.

  • Swimming
    7/10
  • Cycling
    8/10
  • Walking
    8/10
  • Camping
    10/10
  • Outdoor sports
    8/10

Nairobi 3-Day Forecast

More climate data for Nairobi

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.