Climate averages 1991–2020
Debre Birhan weather
by month.
See how the year changes. May has the highest average daily maximum; December has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: OctoberNovemberDecember
Long-term climate patterns, not a forecast for a particular trip.
Across the year Debre Birhan averages a daytime high of 18.9°C and a nighttime low of 9.1°C, with about 2,011 mm of rain on roughly 167 days. May is the warmest month (average high 20.8°C) and August the coolest (17.3°C). August is the wettest month with 579 mm; December is the driest with 17 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): October, November and December. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Debre Birhan
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 | 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
Nearby cities
- Addis AbabaEthiopia · 113 kmHigh 21.7°C · Low 10.3°C · 1,807 mm rain a year
- BishoftuEthiopia · 120 kmHigh 23.9°C · Low 11.7°C · 807 mm rain a year
- NazrētEthiopia · 129 kmHigh 27.4°C · Low 15.1°C · 330 mm rain a year
- SebetaEthiopia · 132 kmHigh 22.2°C · Low 10.5°C · 1,869 mm rain a year
- KombolchaEthiopia · 158 kmHigh 24.4°C · Low 12.9°C · 848 mm rain a year
- DessieEthiopia · 162 kmHigh 20.4°C · Low 9.3°C · 735 mm rain a year
- Mek’īEthiopia · 187 kmHigh 26.1°C · Low 15.7°C · 643 mm rain a year
- Hāgere HiywetEthiopia · 200 kmHigh 24.0°C · Low 13.1°C · 2,330 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 9.70°, 39.50° (4 km from the city centre), adjusted down by 1.3°C for the difference between the city's elevation (2,830 m) and the cell's (2,627 m). Rain comes from the 0.25° cell at 9.75°, 39.50°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.