Climate averages 1991–2020
Debre Birhan weather
in September.
A mild, very wet month: the 10th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Debre Birhan: daytime highs average 18.0°C and nights cool to about 9.7°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 252 mm of rain on roughly 22 days, which makes September a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average September day.
The nearest other city in this atlas is Addis Ababa (113 km away). In September its highs average 20.0°C, 2.1°C warmer than Debre Birhan, with 275 mm of rain.
Among the 40 cities listed in Ethiopia, Debre Birhan ranks 40th of 40 for the warmest September highs and 28th of 40 for the driest September (rainfall, lowest first). The mean September high of those 40 cities is 23.6°C; Debre Birhan is 5.7°C cooler than that mean.
From September to October, average highs rise by 0.3°C to 18.3°C, and monthly rainfall falls from 252 mm to 47 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
Debre Birhan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.5°C7.4°C | 7.4°C | 49 | 8.3 | 11.612 h |
| February | 19.6°C8.2°C | 8.2°C | 56 | 9.2 | 11.812 h |
| March | 20.0°C9.4°C | 9.4°C | 152 | 15.5 | 12.112 h |
| April | 20.0°C10.2°C | 10.2°C | 160 | 16.0 | 12.312 h |
| May | 20.8°C11.1°C | 11.1°C | 78 | 9.3 | 12.613 h |
| June | 20.7°C10.9°C | 10.9°C | 113 | 12.0 | 12.713 h |
| July | 17.6°C10.0°C | 10.0°C | 484 | 29.6 | 12.613 h |
| August | 17.3°C9.9°C | 9.9°C | 579 | 30.6 | 12.412 h |
| September, selected | 18.0°C9.7°C | 9.7°C | 252 | 21.7 | 12.212 h |
| October | 18.3°C8.2°C | 8.2°C | 47 | 6.4 | 11.912 h |
| November | 18.3°C7.3°C | 7.3°C | 23 | 4.2 | 11.712 h |
| December | 18.2°C6.9°C | 6.9°C | 17 | 4.0 | 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
- Addis Ababa in SeptemberEthiopia · 113 kmHigh 20.0°C · Low 10.3°C · 275 mm rain
- Bishoftu in SeptemberEthiopia · 120 kmHigh 22.1°C · Low 12.1°C · 126 mm rain
- Nazrēt in SeptemberEthiopia · 129 kmHigh 26.7°C · Low 15.2°C · 62 mm rain
- Sebeta in SeptemberEthiopia · 132 kmHigh 20.3°C · Low 10.2°C · 303 mm rain
- Kombolcha in SeptemberEthiopia · 158 kmHigh 24.4°C · Low 13.6°C · 74 mm rain
- Dessie in SeptemberEthiopia · 162 kmHigh 20.0°C · Low 9.7°C · 59 mm rain
- Mek’ī in SeptemberEthiopia · 187 kmHigh 24.4°C · Low 15.6°C · 111 mm rain
- Hāgere Hiywet in SeptemberEthiopia · 200 kmHigh 21.9°C · Low 13.3°C · 434 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 Debre Birhan) is explained once on the Debre Birhan year overview and on the Sources, method and limits page.