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Najrān, Saudi Arabia climate
BWh Hot desert
Najrān has a mildly seasonal tropical climate (Hot desert, Köppen BWh). The hottest month is July with an average daily high near 101°F, while the coldest is January averaging around 71°F at night. Precipitation totals about 1 inches a year and is strongly seasonal — March alone averages 0.8 inches while February 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)Najrān climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 88 | 91 | 96 | 100 | 101 | 101 | 100 | 100 | 98 | 93 | 89 |
| Avg temp (°F) | 79 | 81 | 83 | 88 | 91 | 93 | 94 | 93 | 92 | 89 | 85 | 81 |
| Avg low (°F) | 71 | 73 | 76 | 80 | 83 | 86 | 87 | 85 | 84 | 80 | 77 | 73 |
| Precipitation (in) | 0.2 | 0.0 | 0.8 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 88 | 91 | 96 | 100 | 101 |
| Avg temp (°F) | 79 | 81 | 83 | 88 | 91 | 93 |
| Avg low (°F) | 71 | 73 | 76 | 80 | 83 | 86 |
| Precipitation (in) | 0.2 | 0.0 | 0.8 | 0.5 | 0.0 | 0.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 101 | 100 | 100 | 98 | 93 | 89 |
| Avg temp (°F) | 94 | 93 | 92 | 89 | 85 | 81 |
| Avg low (°F) | 87 | 85 | 84 | 80 | 77 | 73 |
| Precipitation (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.2 | 0.1 | 0.1 | 0.0 | 0.1 | 0.0 | 0.2 | 0.2 | 0.1 | 0.0 | 0.1 | 0.1 |
| Days with high ≥ 90°F (days) | 5 | 8 | 22 | 26 | 28 | 27 | 28 | 28 | 26 | 27 | 26 | 14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.2 | 0.1 | 0.1 | 0.0 | 0.1 | 0.0 |
| Days with high ≥ 90°F (days) | 5 | 8 | 22 | 26 | 28 | 27 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.2 | 0.2 | 0.1 | 0.0 | 0.1 | 0.1 |
| Days with high ≥ 90°F (days) | 28 | 28 | 26 | 27 | 26 | 14 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 34 | 36 | 34 | 32 | 35 | 50 | 64 | 60 | 46 | 29 | 26 | 26 |
| Relative humidity (%) | 64 | 64 | 59 | 55 | 55 | 58 | 61 | 64 | 59 | 53 | 56 | 61 |
| Wind speed (mph) | 5.7 | 6.0 | 6.1 | 5.9 | 5.9 | 6.2 | 6.8 | 6.6 | 6.6 | 6.4 | 6.0 | 5.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 34 | 36 | 34 | 32 | 35 | 50 |
| Relative humidity (%) | 64 | 64 | 59 | 55 | 55 | 58 |
| Wind speed (mph) | 5.7 | 6.0 | 6.1 | 5.9 | 5.9 | 6.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 60 | 46 | 29 | 26 | 26 |
| Relative humidity (%) | 61 | 64 | 59 | 53 | 56 | 61 |
| Wind speed (mph) | 6.8 | 6.6 | 6.6 | 6.4 | 6.0 | 5.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at King Abdullah Bin Abdulaziz, a weather station, about 177 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.