Wonji climate — normals and trends
Wonji (Ethiopia) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 20.8 °C and it receives 431 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 May (22.7 °C on average) and the coldest is December (18.7 °C). Rainfall peaks in August.
Wonji averages 0 frost days, 65 hot days (≥ 30 °C) and 88 rainy days per year.
Wonji has warmed by +3.3 °C between 1940 and 2025, or +0.39 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.2 °C (on 29 March 2016) and the coldest 2.6 °C (on 18 January 1941).
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
WonjiOromiya
- coords
- 8.45°, 39.22°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
20.8°C
Average daily high
27.6°C
Average daily low
15.0°C
Annual rainfall
431mm
Sunshine / day
10.9h
Mean relative humidity
56%
Average peak wind
17.3km/h
Seasonal range
4.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
65 d/yr
Rainy days (≥ 1 mm)
88 d/yr
Annual snowfall
0.0 cm
Average feels-like high
27.0 °C
Average feels-like low
14.4 °C
Average peak gust
40.5 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
21.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.3 °C
since 1940
+0.4 °C per decade · r² = 0.83 · 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
36.2 °C
29 March 2016
Coldest day
2.6 °C
18 January 1941
Wettest day
48 mm
21 May 2018
Windiest day
30.9 km/h
26 November 1942
Strongest gust
67.3 km/h
26 November 1942
Hottest feels-like
37.2 °C
13 March 2020
Coldest feels-like
-0.1 °C
18 January 1941
Sunniest day
12.0 h
11 May 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 28.3 °C | +1.5 °C | 0 mm | -5 mm |
| Feb | 30.5 °C | +2.4 °C | 0 mm | -11 mm |
| Mar | 30.8 °C | +1.8 °C | 34 mm | +2 mm |
| Apr | 31.6 °C | +2.5 °C | 19 mm | -27 mm |
| May | 32.0 °C | +2.5 °C | 11 mm | -32 mm |
| Jun | 31.5 °C | +2.8 °C | 2 mm | -21 mm |
| Jul | 28.5 °C | +2.1 °C | 47 mm | -19 mm |
| Aug | 26.6 °C | +0.6 °C | 80 mm | -8 mm |
| Sep | 28.1 °C | +1.4 °C | 87 mm | +3 mm |
| Oct | 29.2 °C | +1.9 °C | 0 mm | -23 mm |
| Nov | 28.2 °C | +1.4 °C | 0 mm | -6 mm |
| Dec | 28.2 °C | +2.0 °C | 1 mm | -2 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 Wonji?
Wonji has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 20.8 °C and it receives 431 mm of precipitation per year.
What is the hottest day ever recorded in Wonji?
The hottest day measured in Wonji between 1940 and 2025 was 29 March 2016, reaching 36.2 °C.
What is the coldest day in Wonji?
The coldest day measured in Wonji between 1940 and 2025 was 18 January 1941, at 2.6 °C.
Does it snow in Wonji?
Almost never: Wonji sees virtually no snow, with about 0 frost days per year.
Has the climate of Wonji warmed?
Yes: Wonji warmed by +3.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wonji?
The wettest day measured in Wonji between 1940 and 2025 was 21 May 2018, with 48 mm of rain in 24 hours.
What was the windiest day in Wonji?
The windiest day measured in Wonji between 1940 and 2025 was 26 November 1942, with winds reaching 30.9 km/h.
What is the warmest month in Wonji?
The warmest month in Wonji is May (22.7 °C on average); the coldest is December (18.7 °C).
How much does it rain in Wonji?
Wonji receives on average 431 mm of precipitation per year, spread over about 88 rainy days.
Is it sunny in Wonji?
Wonji gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Wonji?
Yes: Wonji has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Wonji?
In Wonji, between 1940 and 2025, the highest apparent temperature reached 37.2 °C on 13 March 2020, and the lowest was -0.1 °C on 18 January 1941.
Compare Wonji with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Wonji