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Rumbek, South Sudan climate
As Tropical savanna (dry summer)
Rumbek has a mildly seasonal tropical climate (Tropical savanna (dry summer), Köppen As). The hottest month is March with an average daily high near 40°C, while the coldest is August averaging around 22°C at night. Precipitation totals about 1055 mm a year and is strongly seasonal — August alone averages 180 mm while January barely receives 3 mm.
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)Rumbek climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 38 | 40 | 40 | 38 | 34 | 32 | 31 | 30 | 31 | 33 | 36 | 38 |
| Avg temp (°C) | 30 | 32 | 33 | 32 | 29 | 27 | 26 | 26 | 27 | 28 | 29 | 30 |
| Avg low (°C) | 22 | 24 | 26 | 25 | 24 | 23 | 22 | 22 | 22 | 23 | 23 | 23 |
| Precipitation (mm) | 3 | 4 | 24 | 78 | 137 | 136 | 170 | 180 | 154 | 132 | 34 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 38 | 40 | 40 | 38 | 34 | 32 |
| Avg temp (°C) | 30 | 32 | 33 | 32 | 29 | 27 |
| Avg low (°C) | 22 | 24 | 26 | 25 | 24 | 23 |
| Precipitation (mm) | 3 | 4 | 24 | 78 | 137 | 136 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 30 | 31 | 33 | 36 | 38 |
| Avg temp (°C) | 26 | 26 | 27 | 28 | 29 | 30 |
| Avg low (°C) | 22 | 22 | 22 | 23 | 23 | 23 |
| Precipitation (mm) | 170 | 180 | 154 | 132 | 34 | 3 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 31 | 28 | 31 | 28 | 22 | 12 | 8 | 5 | 10 | 16 | 25 | 30 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 31 | 28 | 31 | 28 | 22 | 12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 8 | 5 | 10 | 16 | 25 | 30 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 43 | 50 | 71 | 77 | 72 | 68 | 72 | 73 | 67 | 68 | 54 | 36 |
| Relative humidity (%) | 25 | 22 | 30 | 50 | 67 | 73 | 77 | 80 | 76 | 72 | 57 | 35 |
| Wind speed (m/s) | 3.0 | 3.1 | 2.8 | 2.4 | 1.9 | 1.6 | 1.5 | 1.4 | 1.3 | 1.3 | 1.9 | 2.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 43 | 50 | 71 | 77 | 72 | 68 |
| Relative humidity (%) | 25 | 22 | 30 | 50 | 67 | 73 |
| Wind speed (m/s) | 3.0 | 3.1 | 2.8 | 2.4 | 1.9 | 1.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 73 | 67 | 68 | 54 | 36 |
| Relative humidity (%) | 77 | 80 | 76 | 72 | 57 | 35 |
| Wind speed (m/s) | 1.5 | 1.4 | 1.3 | 1.3 | 1.9 | 2.7 |
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.