Climate averages 1991–2020
Shashamane weather
in September.
A mild, wet month: the 9th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Shashamane: daytime highs average 21.4°C and nights cool to about 13.0°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 136 mm of rain on roughly 23 days, which makes September a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average September day.
The nearest other city in this atlas is Arsi Negele (19 km away). In September its highs average 21.0°C, about as warm as Shashamane, with 369 mm of rain.
Among the 40 cities listed in Ethiopia, Shashamane ranks 31st of 40 for the warmest September highs and 20th of 40 for the driest September (rainfall, lowest first). The mean September high of those 40 cities is 23.6°C; Shashamane is 2.3°C cooler than that mean.
From September to October, average highs rise by 0.3°C to 21.6°C, and monthly rainfall falls from 136 mm to 96 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
Shashamane climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 23.9°C11.6°C | 11.6°C | 9.2 | 2.1 | 11.812 h |
| February | 25.2°C12.4°C | 12.4°C | 13 | 2.6 | 11.912 h |
| March | 25.6°C13.8°C | 13.8°C | 40 | 7.2 | 12.112 h |
| April | 24.1°C14.3°C | 14.3°C | 89 | 14.2 | 12.312 h |
| May | 22.7°C13.8°C | 13.8°C | 112 | 17.4 | 12.412 h |
| June | 21.3°C13.5°C | 13.5°C | 49 | 14.1 | 12.513 h |
| July | 20.3°C13.4°C | 13.4°C | 60 | 17.6 | 12.512 h |
| August | 20.5°C13.3°C | 13.3°C | 76 | 19.4 | 12.412 h |
| September, selected | 21.4°C13.0°C | 13.0°C | 136 | 23.1 | 12.212 h |
| October | 21.6°C12.8°C | 12.8°C | 96 | 12.3 | 12.012 h |
| November | 22.5°C11.7°C | 11.7°C | 19 | 3.3 | 11.812 h |
| December | 23.1°C11.1°C | 11.1°C | 4.2 | 1.3 | 11.712 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
- Arsi Negele in SeptemberEthiopia · 19 kmHigh 21.0°C · Low 13.2°C · 369 mm rain
- Awasa in SeptemberEthiopia · 21 kmHigh 23.1°C · Low 14.2°C · 171 mm rain
- Yirga ‘Alem in SeptemberEthiopia · 54 kmHigh 22.3°C · Low 13.1°C · 224 mm rain
- K’olīto in SeptemberEthiopia · 58 kmHigh 22.9°C · Low 13.6°C · 163 mm rain
- Ziway in SeptemberEthiopia · 83 kmHigh 22.7°C · Low 15.6°C · 114 mm rain
- Hosa’ina in SeptemberEthiopia · 91 kmHigh 19.4°C · Low 10.6°C · 355 mm rain
- Dīla in SeptemberEthiopia · 93 kmHigh 23.4°C · Low 15.1°C · 212 mm rain
- Sodo in SeptemberEthiopia · 100 kmHigh 21.5°C · Low 12.7°C · 227 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 Shashamane) is explained once on the Shashamane year overview and on the Sources, method and limits page.