Ati, Chad climate
BWh Hot desert
Ati has a mildly seasonal tropical climate (Hot desert, Köppen BWh). The hottest month is May with an average daily high near 42°C, while the coldest is January averaging around 15°C at night. Precipitation totals about 377 mm a year and is strongly seasonal — August alone averages 182 mm while December barely receives 0 mm.
☀️
Summers
Extreme heat
Highs near 42°C in May.
About 312 days a year above 32 °C
❄️
Winters
Mild
Lows near 15°C in January.
🌧️
Rain
Fairly dry
About 377 mm of rain a year.
Wettest in August
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Sky & trend
Fairly sunny
More sun than cloud through the year.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Ati climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 34 | 37 | 40 | 42 | 42 | 39 | 35 | 31 | 33 | 37 | 37 | 35 |
| Avg temp (°C) | 25 | 28 | 31 | 34 | 35 | 33 | 30 | 27 | 28 | 29 | 28 | 25 |
| Avg low (°C) | 15 | 18 | 22 | 25 | 27 | 27 | 24 | 23 | 23 | 22 | 18 | 16 |
| Precipitation (mm) | 0 | 0 | 0 | 2 | 9 | 23 | 90 | 182 | 63 | 8 | 0 | 0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 34 | 37 | 40 | 42 | 42 | 39 |
| Avg temp (°C) | 25 | 28 | 31 | 34 | 35 | 33 |
| Avg low (°C) | 15 | 18 | 22 | 25 | 27 | 27 |
| Precipitation (mm) | 0 | 0 | 0 | 2 | 9 | 23 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 35 | 31 | 33 | 37 | 37 | 35 |
| Avg temp (°C) | 30 | 27 | 28 | 29 | 28 | 25 |
| Avg low (°C) | 24 | 23 | 23 | 22 | 18 | 16 |
| Precipitation (mm) | 90 | 182 | 63 | 8 | 0 | 0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 24 | 27 | 31 | 30 | 31 | 30 | 25 | 10 | 18 | 29 | 30 | 27 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 24 | 27 | 31 | 30 | 31 | 30 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 25 | 10 | 18 | 29 | 30 | 27 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 27 | 27 | 37 | 43 | 50 | 57 | 69 | 73 | 56 | 38 | 25 | 26 |
| Relative humidity (%) | 17 | 13 | 12 | 16 | 27 | 42 | 62 | 77 | 72 | 50 | 25 | 19 |
| Wind speed (km/h) | 12.2 | 12.9 | 12.8 | 10.8 | 9.6 | 10.1 | 9.4 | 6.8 | 6.2 | 6.4 | 9.9 | 11.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 27 | 27 | 37 | 43 | 50 | 57 |
| Relative humidity (%) | 17 | 13 | 12 | 16 | 27 | 42 |
| Wind speed (km/h) | 12.2 | 12.9 | 12.8 | 10.8 | 9.6 | 10.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 73 | 56 | 38 | 25 | 26 |
| Relative humidity (%) | 62 | 77 | 72 | 50 | 25 | 19 |
| Wind speed (km/h) | 9.4 | 6.8 | 6.2 | 6.4 | 9.9 | 11.5 |
Methodology & sources
Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.