Diffa, Niger climate
BWh Hot desert
Diffa has a mildly seasonal tropical climate (Hot desert, Köppen BWh). The hottest month is May with an average daily high near 108°F, while the coldest is January averaging around 57°F at night. Precipitation totals about 14 inches a year and is strongly seasonal — August alone averages 5.5 inches while January 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)Diffa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 93 | 102 | 107 | 108 | 104 | 97 | 92 | 97 | 102 | 97 | 89 |
| Avg temp (°F) | 72 | 78 | 86 | 92 | 94 | 92 | 87 | 83 | 86 | 87 | 81 | 74 |
| Avg low (°F) | 57 | 62 | 70 | 76 | 79 | 81 | 77 | 74 | 75 | 72 | 65 | 59 |
| Precipitation (in) | 0.0 | 0.1 | 0.0 | 0.0 | 0.2 | 1.5 | 2.9 | 5.5 | 2.3 | 1.2 | 0.0 | 0.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 93 | 102 | 107 | 108 | 104 |
| Avg temp (°F) | 72 | 78 | 86 | 92 | 94 | 92 |
| Avg low (°F) | 57 | 62 | 70 | 76 | 79 | 81 |
| Precipitation (in) | 0.0 | 0.1 | 0.0 | 0.0 | 0.2 | 1.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 97 | 92 | 97 | 102 | 97 | 89 |
| Avg temp (°F) | 87 | 83 | 86 | 87 | 81 | 74 |
| Avg low (°F) | 77 | 74 | 75 | 72 | 65 | 59 |
| Precipitation (in) | 2.9 | 5.5 | 2.3 | 1.2 | 0.0 | 0.0 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 28 | 28 | 45 | 59 | 60 | 59 | 67 | 69 | 59 | 49 | 37 | 31 |
| Relative humidity (%) | 19 | 15 | 12 | 15 | 24 | 37 | 53 | 66 | 59 | 34 | 21 | 21 |
| Wind speed (mph) | 8.5 | 8.6 | 8.5 | 7.2 | 6.1 | 6.3 | 6.7 | 5.2 | 4.6 | 5.4 | 7.8 | 8.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 28 | 28 | 45 | 59 | 60 | 59 |
| Relative humidity (%) | 19 | 15 | 12 | 15 | 24 | 37 |
| Wind speed (mph) | 8.5 | 8.6 | 8.5 | 7.2 | 6.1 | 6.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 69 | 59 | 49 | 37 | 31 |
| Relative humidity (%) | 53 | 66 | 59 | 34 | 21 | 21 |
| Wind speed (mph) | 6.7 | 5.2 | 4.6 | 5.4 | 7.8 | 8.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 22 years of daily observations at Diffa, a weather station, about 7 km from the city centre. The underlying daily records come from NOAA's global station network.
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.