Temperatures in September
It's hot in September in Nairobi with an average temperature of 30°C. Temperatures this month range from a low of 27°C to a high of 31°C. At night, you can expect temperatures between 14°C and 16°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Nairobi in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Nairobi with hot temperatures, averaging around 29°C during the day and nights close to 16°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-September
By mid-September, the average daytime temperature rises to around 31°C, with nights close to 15°C. Not much precipitation expected during this period. It’s mostly dry with sunshine.
Temperatures vary between day and night, so it’s smart to wear layers.
End of September
By the end of September, the average daytime temperature in Nairobi will be around 31°C, with nights close to 16°C. Barely any chance of precipitation. The weather will mostly be dry with lots of sunshine.
As it gets cooler in the evening, it’s best to wear layers.
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Precipitation in September
In September, there is an average of 30 mm of precipitation, spread over 5 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
The precipitation chance averages 16% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Nairobi. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Nairobi in September |
London | ||
|---|---|---|---|
 Average Temperature |
30°C | 20°C | |
 High Temp |
31°C | 22°C | |
| Low Temp |
27°C | 17°C | |
 Total Precipitation |
30 mm | 44 mm | |
| Rainy Days |
5 days | 8 days | |
August
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Nairobi?
September is a great month to be in Nairobi for sunny weather. You’ll get high temperatures and not too much rain this month.
Temperature records for Nairobi in September
With 35°C, Nairobi hit the highest temperature in the last 10 years in September 2021. The lowest daytime temperature in this month was 15°C in 2014. The extreme night temperatures ranged from a low of 9°C to a high of 22°C.
Check out the climate of Nairobi for all months and discover the best travel time
Curious about the climate in other parts of Kenya? Check out the weather and climate in places like Masai Mara National Reserve, Mombasa, Lake Nakuru National Park, or have a look at other destinations in Kenya.
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Daily Temperature in September in Nairobi
This chart shows the average daily temperatures, both day and night, for each day in September in Nairobi, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Nairobi
The chart below shows the average daily precipitation in September for Nairobi, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 5 days of rain in Nairobi.
Daily UV Index in September in Nairobi
This chart shows the average daily UV index in September in Nairobi, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Nairobi Over the Years
This chart shows the average temperature in September in Nairobi, measured in degrees Celsius, over the past years.
Total Precipitation in September in Nairobi Over the Years
This chart shows the average precipitation in September in Nairobi, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Nairobi
Click on a specific day in September for detailed info on the typical weather on that day in Nairobi. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Nairobi
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Average Weather in Nairobi by Month
Click on a month below to see detailed weather info for Nairobi. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
