Semera climate — normals and trends
Semera (Ethiopia) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 29.9 °C and it receives 220 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 June (34.3 °C on average) and the coldest is January (25.3 °C). Rainfall peaks in August.
Semera averages 0 frost days, 344 hot days (≥ 30 °C) and 41 rainy days per year.
Semera has warmed by +3.0 °C between 1940 and 2025, or +0.35 °C per decade. This trend is statistically significant.
The hottest day of the period reached 44.8 °C (on 2 June 2017) and the coldest 12.7 °C (on 22 December 2008).
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
SemeraAfar Region
- coords
- 11.79°, 41.01°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
29.9°C
Average daily high
35.8°C
Average daily low
24.0°C
Annual rainfall
220mm
Sunshine / day
10.9h
Mean relative humidity
44%
Average peak wind
18.0km/h
Seasonal range
9.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
344 d/yr
Rainy days (≥ 1 mm)
41 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.3 °C
Average feels-like low
25.0 °C
Average peak gust
31.9 km/h
Tropical nights (≥ 20 °C)
307 d/yr
Solar radiation
21.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.0 °C
since 1940
+0.4 °C per decade · r² = 0.64 · 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
44.8 °C
2 June 2017
Coldest day
12.7 °C
22 December 2008
Wettest day
115 mm
30 April 1950
Windiest day
48.2 km/h
5 October 2015
Strongest gust
64.1 km/h
5 October 2015
Hottest feels-like
45.4 °C
30 July 2023
Coldest feels-like
11.5 °C
22 December 2008
Sunniest day
12.0 h
25 April 1940
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 | 33.2 °C | +1.7 °C | 0 mm | -5 mm |
| Feb | 35.5 °C | +2.5 °C | 0 mm | -10 mm |
| Mar | 37.4 °C | +2.4 °C | 2 mm | -24 mm |
| Apr | 39.4 °C | +3.0 °C | 0 mm | -35 mm |
| May | 41.2 °C | +2.8 °C | 2 mm | -20 mm |
| Jun | 42.1 °C | +1.9 °C | 0 mm | -7 mm |
| Jul | 41.5 °C | +2.9 °C | 2 mm | -23 mm |
| Aug | 35.9 °C | -1.5 °C | 87 mm | +44 mm |
| Sep | 39.2 °C | +1.8 °C | 10 mm | -16 mm |
| Oct | 37.3 °C | +1.5 °C | 0 mm | -10 mm |
| Nov | 34.3 °C | +0.7 °C | 0 mm | -6 mm |
| Dec | 32.6 °C | +0.9 °C | 1 mm | -4 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 Semera?
Semera has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 29.9 °C and it receives 220 mm of precipitation per year.
What is the hottest day ever recorded in Semera?
The hottest day measured in Semera between 1940 and 2025 was 2 June 2017, reaching 44.8 °C.
What is the coldest day in Semera?
The coldest day measured in Semera between 1940 and 2025 was 22 December 2008, at 12.7 °C.
Does it snow in Semera?
Almost never: Semera sees virtually no snow, with about 0 frost days per year.
Has the climate of Semera warmed?
Yes: Semera warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Semera?
The wettest day measured in Semera between 1940 and 2025 was 30 April 1950, with 115 mm of rain in 24 hours.
What was the windiest day in Semera?
The windiest day measured in Semera between 1940 and 2025 was 5 October 2015, with winds reaching 48.2 km/h.
What is the warmest month in Semera?
The warmest month in Semera is June (34.3 °C on average); the coldest is January (25.3 °C).
How much does it rain in Semera?
Semera receives on average 220 mm of precipitation per year, spread over about 41 rainy days.
Is it sunny in Semera?
Semera gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Semera?
Yes: Semera has on average 307 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Semera?
In Semera, between 1940 and 2025, the highest apparent temperature reached 45.4 °C on 30 July 2023, and the lowest was 11.5 °C on 22 December 2008.
Compare Semera with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Semera