Umm Hājar climate — normals and trends
Umm Hājar has a hot semi-arid climate, averaging 28.6 °C annually with 448 mm of rain per year.
Climate normals · ERA5
Umm HājarBatha Region
- coords
- 13.30°, 19.70°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
28.6°C
Average daily high
36.0°C
Average daily low
22.4°C
Annual rainfall
448mm
Sunshine / day
11.1h
Mean relative humidity
36%
Average peak wind
14.8km/h
Seasonal range
8.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
338 d/yr
Rainy days (≥ 1 mm)
64 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.8 °C
Average feels-like low
21.3 °C
Average peak gust
30.4 km/h
Tropical nights (≥ 20 °C)
271 d/yr
Solar radiation
23.0 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.66 · 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).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
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
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
46.6 °C
24 April 2024
Coldest day
8.9 °C
18 January 1968
Wettest day
144 mm
16 July 1946
Windiest day
36.6 km/h
2 June 1974
Strongest gust
64.1 km/h
13 March 2016
Hottest feels-like
48.0 °C
24 April 2024
Coldest feels-like
4.6 °C
18 January 1968
Sunniest day
12.7 h
1 June 1941
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 34.4 °C | +1.3 °C | 0 mm | -0 mm |
| Feb | 37.6 °C | +2.2 °C | 0 mm | 0 mm |
| Mar | 40.3 °C | +1.6 °C | 0 mm | -0 mm |
| Apr | 41.9 °C | +1.1 °C | 0 mm | -1 mm |
| May | 42.5 °C | +2.2 °C | 0 mm | -11 mm |
| Jun | 40.4 °C | +1.9 °C | 2 mm | -25 mm |
| Jul | 34.7 °C | +0.7 °C | 70 mm | -63 mm |
| Aug | 31.4 °C | +0.2 °C | 245 mm | +41 mm |
| Sep | 34.3 °C | +0.6 °C | 36 mm | -28 mm |
| Oct | 37.5 °C | +0.7 °C | 0 mm | -8 mm |
| Nov | 37.4 °C | +1.6 °C | 0 mm | -0 mm |
| Dec | 36.3 °C | +2.7 °C | 0 mm | 0 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
Umm Hājar (Chad) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 28.6 °C and it receives 448 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 (33.1 °C on average) and the coldest is January (24.2 °C). Rainfall peaks in August.
Umm Hājar averages 0 frost days, 338 hot days (≥ 30 °C) and 64 rainy days per year.
Umm Hājar has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The hottest day of the period reached 46.6 °C (on 24 April 2024) and the coldest 8.9 °C (on 18 January 1968).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Compare Umm Hājar with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Umm Hājar
Other cities — Chad
Frequently asked questions
What is the climate of Umm Hājar?
Umm Hājar has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 28.6 °C and it receives 448 mm of precipitation per year.
What is the hottest day ever recorded in Umm Hājar?
The hottest day measured in Umm Hājar between 1940 and 2025 was 24 April 2024, reaching 46.6 °C.
What is the coldest day in Umm Hājar?
The coldest day measured in Umm Hājar between 1940 and 2025 was 18 January 1968, at 8.9 °C.
Does it snow in Umm Hājar?
Almost never: Umm Hājar sees virtually no snow, with about 0 frost days per year.
Has the climate of Umm Hājar warmed?
Yes: Umm Hājar warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Umm Hājar?
The wettest day measured in Umm Hājar between 1940 and 2025 was 16 July 1946, with 144 mm of rain in 24 hours.
What was the windiest day in Umm Hājar?
The windiest day measured in Umm Hājar between 1940 and 2025 was 2 June 1974, with winds reaching 36.6 km/h.
What is the warmest month in Umm Hājar?
The warmest month in Umm Hājar is May (33.1 °C on average); the coldest is January (24.2 °C).
How much does it rain in Umm Hājar?
Umm Hājar receives on average 448 mm of precipitation per year, spread over about 64 rainy days.
Is it sunny in Umm Hājar?
Umm Hājar gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
Are there tropical nights in Umm Hājar?
Yes: Umm Hājar has on average 271 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Umm Hājar?
In Umm Hājar, between 1940 and 2025, the highest apparent temperature reached 48.0 °C on 24 April 2024, and the lowest was 4.6 °C on 18 January 1968.
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