Addis Ababa weather in September
In September, Addis Ababa has an average high of 20 °C68 °F and an average low of 10 °C50 °F, with about 145 mm5.7 in of precipitation. It is the 8th warmest month of the year and ranks 3rd for precipitation.
How September compares with other months
Compared with August, September is about the same temperature and drier by 101 mm4.0 in. Compared with October, September is 1.1 °C2 °F warmer on average and wetter by 111 mm4.4 in. Daylight lasts about 12.2 hours around the middle of the month. Average relative humidity is 80% and the average cloud amount 69%.
Is September a good time to visit Addis Ababa?
September is not among the most comfortable months by our comfort score: it is cool (average high 20 °C68 °F) and it is fairly wet (145 mm5.7 in). The most comfortable months in Addis Ababa are October–May.
What to wear in September
For Addis Ababa in September, pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Addis Ababa | 2068 | 1050 | 1455.7 |
| Bishoftu | 2373 | 1355 | 1455.7 |
| Nazrēt | 2780 | 1661 | 823.2 |
| Debre Birhan | 1864 | 847 | 913.6 |
| Asela | 2068 | 1051 | 1114.4 |
| Debre Markos | 1966 | 1050 | 2449.6 |
| Hosaina | 2169 | 1153 | 1666.5 |
| Awasa | 2475 | 1558 | 1676.6 |
| Nekemte | 2068 | 1254 | 30512 |
Nearby places that are more than 1 °C1.8 °F warmer in September: Bishoftu, Nazrēt and Awasa; cooler: Debre Birhan.
Other months in Addis Ababa
- January23 °C74 °F / 7 °C44 °F
- February25 °C76 °F / 8 °C47 °F
- March25 °C77 °F / 10 °C50 °F
- April24 °C75 °F / 11 °C51 °F
- May24 °C76 °F / 11 °C52 °F
- June23 °C74 °F / 12 °C53 °F
- July20 °C68 °F / 11 °C52 °F
- August20 °C67 °F / 11 °C52 °F
- September20 °C68 °F / 10 °C50 °F
- October21 °C70 °F / 7 °C45 °F
- November22 °C71 °F / 6 °C43 °F
- December22 °C72 °F / 6 °C42 °F
Frequently asked questions
How warm is Addis Ababa in September?
In September the average high in Addis Ababa is 20 °C (68 °F) and the average low is 10 °C (50 °F).
Does it rain a lot in Addis Ababa in September?
On average about 145 mm (5.7 in) of precipitation falls in September; it ranks 3rd of the 12 months.
Is September the warmest month in Addis Ababa?
No. The warmest month in Addis Ababa is March, with an average high of 25 °C (77 °F). The coldest month is December, with an average low of 6 °C (42 °F).
How long is the day in Addis Ababa in September?
In the middle of September the day in Addis Ababa lasts about 12.2 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Addis Ababa in September?
The average relative humidity in September is about 80%. This is a long-term average for the whole day.
How cloudy is Addis Ababa in September?
On average about 69% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 2,350 m, while Addis Ababa lies at about 2,405 m. Temperatures on this page were therefore adjusted by −0.4 °C0.6 °F using the standard lapse rate of 6.5 °C per 1,000 m.