Dēra climate — normals and trends
Dēra (Ethiopia) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 18.3 °C and it receives 930 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is April (20.0 °C on average) and the coldest is December (17.0 °C). Rainfall peaks in August.
Dēra averages 0 frost days, 9 hot days (≥ 30 °C) and 144 rainy days per year.
Dēra has warmed by +3.3 °C between 1940 and 2025, or +0.38 °C per decade. This trend is statistically significant.
The hottest day of the period reached 33.4 °C (on 29 March 2016) and the coldest 2.3 °C (on 7 January 2017).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
DēraOromiya
- coords
- 8.40°, 38.85°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.3°C
Average daily high
25.0°C
Average daily low
12.5°C
Annual rainfall
930mm
Sunshine / day
10.8h
Mean relative humidity
61%
Average peak wind
14.0km/h
Seasonal range
3.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
144 d/yr
Annual snowfall
0.0 cm
Average feels-like high
24.9 °C
Average feels-like low
11.8 °C
Average peak gust
35.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
22.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.3 °C
since 1940
+0.4 °C per decade · r² = 0.84 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
33.4 °C
29 March 2016
Coldest day
2.3 °C
7 January 2017
Wettest day
75 mm
7 April 1987
Windiest day
29.9 km/h
25 May 2003
Strongest gust
69.1 km/h
20 April 1961
Hottest feels-like
33.9 °C
13 March 2020
Coldest feels-like
-1.9 °C
7 January 2017
Sunniest day
12.1 h
9 May 1988
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 26.6 °C | +1.4 °C | 0 mm | -13 mm |
| Feb | 28.4 °C | +2.2 °C | 0 mm | -23 mm |
| Mar | 28.5 °C | +1.6 °C | 58 mm | -2 mm |
| Apr | 29.3 °C | +2.6 °C | 21 mm | -71 mm |
| May | 28.7 °C | +2.0 °C | 76 mm | -12 mm |
| Jun | 28.4 °C | +3.0 °C | 20 mm | -66 mm |
| Jul | 24.9 °C | +2.1 °C | 130 mm | -45 mm |
| Aug | 22.9 °C | +0.5 °C | 196 mm | -0 mm |
| Sep | 23.9 °C | +0.5 °C | 138 mm | -3 mm |
| Oct | 26.1 °C | +1.4 °C | 11 mm | -26 mm |
| Nov | 25.9 °C | +1.2 °C | 0 mm | -11 mm |
| Dec | 26.2 °C | +1.7 °C | 3 mm | -3 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Dēra?
Dēra has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 18.3 °C and it receives 930 mm of precipitation per year.
What is the hottest day ever recorded in Dēra?
The hottest day measured in Dēra between 1940 and 2025 was 29 March 2016, reaching 33.4 °C.
What is the coldest day in Dēra?
The coldest day measured in Dēra between 1940 and 2025 was 7 January 2017, at 2.3 °C.
Does it snow in Dēra?
Almost never: Dēra sees virtually no snow, with about 0 frost days per year.
Has the climate of Dēra warmed?
Yes: Dēra warmed by +3.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Dēra?
The wettest day measured in Dēra between 1940 and 2025 was 7 April 1987, with 75 mm of rain in 24 hours.
What was the windiest day in Dēra?
The windiest day measured in Dēra between 1940 and 2025 was 25 May 2003, with winds reaching 29.9 km/h.
What is the warmest month in Dēra?
The warmest month in Dēra is April (20.0 °C on average); the coldest is December (17.0 °C).
How much does it rain in Dēra?
Dēra receives on average 930 mm of precipitation per year, spread over about 144 rainy days.
Is it sunny in Dēra?
Dēra gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
Are there tropical nights in Dēra?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Dēra.
What was the most extreme apparent temperature in Dēra?
In Dēra, between 1940 and 2025, the highest apparent temperature reached 33.9 °C on 13 March 2020, and the lowest was -1.9 °C on 7 January 2017.
Compare Dēra with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Dēra