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Biltine, Chad climate
BWh Hot desert
Biltine has a mildly seasonal tropical climate (Hot desert, Köppen BWh). The hottest month is May with an average daily high near 107°F, while the coldest is January averaging around 58°F at night. Precipitation totals about 11 inches a year and is strongly seasonal — August alone averages 5.8 inches while December barely receives 0.00 inches.
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)Biltine climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 92 | 97 | 102 | 106 | 107 | 104 | 97 | 91 | 95 | 99 | 96 | 93 |
| Avg temp (°F) | 75 | 80 | 86 | 91 | 93 | 92 | 87 | 82 | 84 | 84 | 80 | 76 |
| Avg low (°F) | 58 | 63 | 69 | 75 | 79 | 79 | 76 | 73 | 72 | 69 | 64 | 59 |
| Precipitation (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.5 | 3.1 | 5.8 | 1.5 | 0.1 | 0.0 | 0.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 92 | 97 | 102 | 106 | 107 | 104 |
| Avg temp (°F) | 75 | 80 | 86 | 91 | 93 | 92 |
| Avg low (°F) | 58 | 63 | 69 | 75 | 79 | 79 |
| Precipitation (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 97 | 91 | 95 | 99 | 96 | 93 |
| Avg temp (°F) | 87 | 82 | 84 | 84 | 80 | 76 |
| Avg low (°F) | 76 | 73 | 72 | 69 | 64 | 59 |
| Precipitation (in) | 3.1 | 5.8 | 1.5 | 0.1 | 0.0 | 0.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | 22 | 25 | 31 | 30 | 31 | 30 | 27 | 17 | 23 | 30 | 29 | 24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | 22 | 25 | 31 | 30 | 31 | 30 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | 27 | 17 | 23 | 30 | 29 | 24 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 28 | 25 | 36 | 40 | 48 | 49 | 61 | 71 | 53 | 36 | 24 | 27 |
| Relative humidity (%) | 17 | 14 | 12 | 13 | 18 | 30 | 51 | 68 | 60 | 36 | 21 | 19 |
| Wind speed (mph) | 8.0 | 8.2 | 8.3 | 7.7 | 6.8 | 6.0 | 6.5 | 5.0 | 4.1 | 5.3 | 7.0 | 7.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 28 | 25 | 36 | 40 | 48 | 49 |
| Relative humidity (%) | 17 | 14 | 12 | 13 | 18 | 30 |
| Wind speed (mph) | 8.0 | 8.2 | 8.3 | 7.7 | 6.8 | 6.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 71 | 53 | 36 | 24 | 27 |
| Relative humidity (%) | 51 | 68 | 60 | 36 | 21 | 19 |
| Wind speed (mph) | 6.5 | 5.0 | 4.1 | 5.3 | 7.0 | 7.7 |
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.