Climate averages 1991–2020
Waliso weather
in September.
A mild, very wet month: the 10th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Waliso: daytime highs average 20.3°C and nights cool to about 11.3°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 286 mm of rain on roughly 28 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average September day.
The nearest other city in this atlas is Welk’īt’ē (34 km away). In September its highs average 20.4°C, about as warm as Waliso, with 294 mm of rain.
Among the 40 cities listed in Ethiopia, Waliso ranks joint 34th of 40 for the warmest September highs and 33rd of 40 for the driest September (rainfall, lowest first). The mean September high of those 40 cities is 23.6°C; Waliso is 3.4°C cooler than that mean.
From September to October, average highs rise by 2.1°C to 22.4°C, and monthly rainfall falls from 286 mm to 73 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Waliso climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.5°C11.6°C | 11.6°C | 10 | 2.7 | 11.712 h |
| February | 25.7°C12.5°C | 12.5°C | 15 | 3.4 | 11.812 h |
| March | 25.9°C13.4°C | 13.4°C | 56 | 8.6 | 12.112 h |
| April | 25.1°C13.5°C | 13.5°C | 97 | 13.6 | 12.312 h |
| May | 23.6°C12.9°C | 12.9°C | 176 | 19.9 | 12.513 h |
| June | 20.6°C12.8°C | 12.8°C | 186 | 28.2 | 12.613 h |
| July | 19.1°C12.5°C | 12.5°C | 235 | 30.3 | 12.613 h |
| August | 19.3°C12.4°C | 12.4°C | 243 | 30.4 | 12.412 h |
| September, selected | 20.3°C11.3°C | 11.3°C | 286 | 28.0 | 12.212 h |
| October | 22.4°C10.3°C | 10.3°C | 73 | 8.8 | 11.912 h |
| November | 23.5°C10.9°C | 10.9°C | 16 | 2.8 | 11.712 h |
| December | 23.9°C10.9°C | 10.9°C | 4.9 | 1.1 | 11.612 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Welk’īt’ē in SeptemberEthiopia · 34 kmHigh 20.4°C · Low 11.6°C · 294 mm rain
- Hāgere Hiywet in SeptemberEthiopia · 52 kmHigh 21.9°C · Low 13.3°C · 434 mm rain
- Butajīra in SeptemberEthiopia · 64 kmHigh 21.7°C · Low 12.9°C · 408 mm rain
- Sebeta in SeptemberEthiopia · 83 kmHigh 20.3°C · Low 10.2°C · 303 mm rain
- Addis Ababa in SeptemberEthiopia · 102 kmHigh 20.0°C · Low 10.3°C · 275 mm rain
- Mek’ī in SeptemberEthiopia · 103 kmHigh 24.4°C · Low 15.6°C · 111 mm rain
- Ziway in SeptemberEthiopia · 106 kmHigh 22.7°C · Low 15.6°C · 114 mm rain
- Hosa’ina in SeptemberEthiopia · 110 kmHigh 19.4°C · Low 10.6°C · 355 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Waliso) is explained once on the Waliso year overview and on the Sources, method and limits page.