Planning a trip to Nairobi in September? You are in luck! The weather is generally good, with an average maximum temperature of +77°F and approximately 2 sunny days. Just be prepared for some rain, as there are usually around 1 rainy days and 12 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+77°F
Avg. max. temperature
+48°F
Min.
+91°F
Max.
12 mm
Total precipitation
65%
Avg. humidity
2 m/s
Avg. wind
2 ☀️
Sunny Days
27 ⛅️
Cloudy
1 🌦
Rainy
Our opinion: Nairobi has good weather in September.
Average temperature in Nairobi in September
Here are the expected maximum, average and minimum temperatures in Nairobi for September based on the historical data.
Last Year
Historical Data
The temperature in September is +77°F on average, with a range between a maximum of +81°F during the day and a minimum of +52°F at night.
The average maximum temperature goes up 6% by the end of the month, compared with the beginning of the month, from +75°F to +77°F.
Is Nairobi warm or cold in September?
Nairobi is typically warm in September.
Maximum temperatures go up compared to the previous month from +73°F to +77°F. The minimum temperature also goes up from +55°F to +57°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Nairobi:
Climate in Nairobi in September
Nairobi weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+73°F
+77°F
+79°F
Min. temperature
+46°F
+48°F
+43°F
Max. temperature
+86°F
+91°F
+88°F
Rainfall
15 mm
12 mm
30 mm
Wind
2 m/s
2 m/s
2 m/s
Humidity
69%
65%
65%
Air pressure
1019 HPa
1018 HPa
1017 HPa
Sunny days
1
2
1
Cloudy days
29
27
27
Rainy days
1
1
3
Snowy days
0
0
0
September weather is still as good as in August.It’s getting warmer as September arrives. The average maximum temperature goes up from +73°F to +77°F during the day.As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 15 mm to 12 mm.It feels drier, as humidity decreases from 69% to 65%.The average wind speed doesn’t change much during September, staying around 2 m/s.The good news is there are likely to be more sunny days in September, from 1 to 2.
October brings much the same weather, it remains good.
Wind speed in Nairobi in September based on historical data.
Last Year
Historical Data
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Nairobi is gradually increasing during September, going from 3 m/s to 4 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Nairobi based on historical data.
Last Year
Historical Data
Total precipitation in September is about 12 mm, with a 10% chance of rain on a typical day. The maximum amount of rainfall per day is around 10 mm, which is considered light rain.Nairobi is amazing in September with as little as 3 rainy days on average, so plan adventures in the great outdoors.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Nairobi wettest month is April, where a typical day has a 37% chance of precipitation and 108 mm of rainfall per day. September, on the other hand, is the driest month with a mere 3% chance of precipitation and 12 mm of rainfall per day.
How was the weather last September in Nairobi?
This is the weather in Nairobi in September 2023:
1 September
☁️
+76°F
2 September
☁️
+67°F
3 September
☁️
+74°F
4 September
☁️
+78°F
5 September
☁️
+79°F
6 September
☁️
+78°F
7 September
☁️
+66°F
8 September
☁️
+67°F
9 September
☁️
+68°F
10 September
☁️
+75°F
11 September
☁️
+79°F
12 September
☁️
+79°F
13 September
☁️
+78°F
14 September
☁️
+70°F
15 September
☁️
+73°F
16 September
☁️
+76°F
17 September
☁️
+76°F
18 September
☁️
+75°F
19 September
☁️
+81°F
20 September
☁️
+80°F
21 September
☁️
+80°F
22 September
☁️
+80°F
23 September
☁️
+81°F
24 September
☁️
+80°F
25 September
☁️
+76°F
26 September
☁️
+78°F
27 September
☁️
+78°F
28 September
☁️
+80°F
29 September
☁️
+80°F
30 September
☁️
+77°F
In September 2023 Nairobi had 0 sunny days, 30 cloudy days, and 0 rainy days. The average maximum temperature was +77°F, with an absolute maximum of +81°F and a minimum of +66°F. The average humidity was 64%, with a maximum of 100% and a minimum of 27%. The average wind speed was 3 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Nairobi climate has changed over the last 43 years.
The climate in Nairobi in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1988 (+77°F) and the highest in 1987 (+81°F). The driest year was 1997 with only 0 mm of rainfall, and the wettest year was 2020 with 45 mm.
FAQ
Frequently asked questions about the weather in Nairobi in September:
Is September a good time to visit Nairobi?
September is a really good time to go to Nairobi. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Nairobi.
Can you sunbathe in Nairobi in September?
September is warm in Nairobi. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Is Nairobi rainy in September?
Nairobi is usually dry in September. Plan your packing around outdoor activities and exploring.
Is it sunny in Nairobi in September?
Usually, it’s not very sunny in Nairobi in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Nairobi, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.