Climate Overview
The climate in Debre Birhan is temperate. The average annual temperature is 14°C and approximately 1998mm of precipitation falls per year. August is the wettest month, receiving around 544mm of rainfall. Debre Birhan sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Debre Birhan sees moderate temperature variation throughout the year, ranging from 7°C to 21°C. May is the warmest month, though highs remain moderate at 21°C with a mean of 16°C. December is the coolest month, with minimum temperatures around 7°C and an average of 13°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.
Precipitation
Debre Birhan is a fairly wet location, receiving approximately 1998mm of precipitation annually, which averages out to around 166mm per month. The wettest month is August, averaging 544mm of rainfall. July and September also tend to see above-average precipitation. The driest month is December, with just 7mm. That's 537mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Debre Birhan is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Debre Birhan, which began on March 20, 2026. Debre Birhan sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in May at around 21°C, while the coldest stretch bottoms out in December near 7°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 10 to 21°C. Rainfall is heavy, totalling around 460mm across the season with a monthly average of 153mm. Winds are generally light, averaging 13km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 10 to 21°C. Rainfall is heavy, totalling around 1122mm across the season with a monthly average of 374mm. Winds are generally light, averaging 10km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 8 to 19°C. Rainfall is heavy, totalling around 337mm across the season with a monthly average of 112mm. Winds are generally light, averaging 12km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 7 to 21°C. Rainfall is relatively light, with around 79mm over the season and a monthly average of 26mm. Winds are generally light, averaging 11km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Debre Birhan based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
