Ati climate — normals and trends
Ati (Chad) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 28.6 °C and it receives 366 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 (33.3 °C on average) and the coldest is January (23.5 °C). Rainfall peaks in August.
Ati averages 0 frost days, 337 hot days (≥ 30 °C) and 57 rainy days per year.
Ati has warmed by +2.7 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The hottest day of the period reached 46.5 °C (on 18 April 2024) and the coldest 7.6 °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.
Climate normals · ERA5
AtiBatha Region
- coords
- 13.21°, 18.34°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
28.6°C
Average daily high
36.0°C
Average daily low
22.4°C
Annual rainfall
366mm
Sunshine / day
11.1h
Mean relative humidity
35%
Average peak wind
15.5km/h
Seasonal range
9.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
337 d/yr
Rainy days (≥ 1 mm)
57 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.5 °C
Average feels-like low
21.2 °C
Average peak gust
31.7 km/h
Tropical nights (≥ 20 °C)
267 d/yr
Solar radiation
23.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.65 · 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
46.5 °C
18 April 2024
Coldest day
7.6 °C
18 January 1968
Wettest day
154 mm
6 August 2013
Windiest day
33.5 km/h
22 April 2013
Strongest gust
64.1 km/h
22 April 2013
Hottest feels-like
48.1 °C
24 April 2024
Coldest feels-like
3.1 °C
18 January 1968
Sunniest day
12.4 h
18 May 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 | 34.5 °C | +2.1 °C | 0 mm | 0 mm |
| Feb | 37.5 °C | +2.7 °C | 0 mm | 0 mm |
| Mar | 40.6 °C | +2.2 °C | 0 mm | -0 mm |
| Apr | 42.2 °C | +1.3 °C | 0 mm | -1 mm |
| May | 42.6 °C | +2.1 °C | 0 mm | -10 mm |
| Jun | 40.5 °C | +1.9 °C | 1 mm | -22 mm |
| Jul | 34.8 °C | +0.5 °C | 67 mm | -36 mm |
| Aug | 32.3 °C | +0.8 °C | 105 mm | -63 mm |
| Sep | 36.3 °C | +2.0 °C | 22 mm | -33 mm |
| Oct | 39.0 °C | +1.7 °C | 0 mm | -7 mm |
| Nov | 38.3 °C | +2.5 °C | 0 mm | -1 mm |
| Dec | 36.5 °C | +3.4 °C | 0 mm | 0 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 Ati?
Ati has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 28.6 °C and it receives 366 mm of precipitation per year.
What is the hottest day ever recorded in Ati?
The hottest day measured in Ati between 1940 and 2025 was 18 April 2024, reaching 46.5 °C.
What is the coldest day in Ati?
The coldest day measured in Ati between 1940 and 2025 was 18 January 1968, at 7.6 °C.
Does it snow in Ati?
Almost never: Ati sees virtually no snow, with about 0 frost days per year.
Has the climate of Ati warmed?
Yes: Ati warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ati?
The wettest day measured in Ati between 1940 and 2025 was 6 August 2013, with 154 mm of rain in 24 hours.
What was the windiest day in Ati?
The windiest day measured in Ati between 1940 and 2025 was 22 April 2013, with winds reaching 33.5 km/h.
What is the warmest month in Ati?
The warmest month in Ati is May (33.3 °C on average); the coldest is January (23.5 °C).
How much does it rain in Ati?
Ati receives on average 366 mm of precipitation per year, spread over about 57 rainy days.
Is it sunny in Ati?
Ati gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
Are there tropical nights in Ati?
Yes: Ati has on average 267 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ati?
In Ati, between 1940 and 2025, the highest apparent temperature reached 48.1 °C on 24 April 2024, and the lowest was 3.1 °C on 18 January 1968.
Compare Ati with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ati