Rumbek, South Sudan Climate
The warmest month is March, with an average high of 40°C; the coldest is August, with an average low of 22°C. A normal year brings 1038 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 24
- Normal high
- 31°C
- Normal low
- 22°C
- Reanalysis high
- 38°Cin 2002
- Reanalysis low
- 20°Cin 1994
- Chance of a wet day
- 76%
- Daylight
- 12 h 06 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 38°C | 22°C | 43°C (2010) | 14°C (2015) | 3 mm | 0.0 |
| February | 40°C | 24°C | 45°C (2005) | 17°C (1993) | 3 mm | 0.0 |
| March | 40°C | 26°C | 45°C (2004) | 18°C (1996) | 19 mm | 3.1 |
| April | 38°C | 25°C | 46°C (2005) | 20°C (1992) | 81 mm | 15.0 |
| May | 34°C | 24°C | 42°C (2002) | 21°C (1997) | 143 mm | 21.7 |
| June | 32°C | 23°C | 40°C (2006) | 19°C (2016) | 150 mm | 21.0 |
| July | 30°C | 22°C | 39°C (2006) | 19°C (1996) | 164 mm | 24.8 |
| August | 30°C | 22°C | 38°C (2002) | 19°C (2014) | 186 mm | 27.9 |
| September | 31°C | 22°C | 41°C (2002) | 18°C (2013) | 141 mm | 24.0 |
| October | 32°C | 22°C | 40°C (2004) | 18°C (2019) | 121 mm | 21.7 |
| November | 35°C | 22°C | 42°C (2004) | 15°C (2011) | 21 mm | 6.0 |
| December | 37°C | 22°C | 41°C (2005) | 13°C (2015) | 6 mm | 0.0 |
| Year | 35°C | 23°C | 1038 mm | 165 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
1038 mm in a normal year, most in August.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Rumbek.
The muggiest month is June, when 100 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 6°C | 24% | 92% | 5% | 2% | 0% | 0% | 0% |
| February | 5°C | 21% | 90% | 6% | 3% | 1% | 0% | 0% |
| March | 10°C | 30% | 56% | 16% | 17% | 9% | 2% | 0% |
| April | 18°C | 51% | 8% | 8% | 24% | 40% | 19% | 0% |
| May | 21°C | 67% | 0% | 0% | 3% | 36% | 60% | 0% |
| June | 21°C | 74% | 0% | 0% | 1% | 30% | 70% | 0% |
| July | 21°C | 78% | 0% | 0% | 0% | 37% | 63% | 0% |
| August | 22°C | 81% | 0% | 0% | 0% | 18% | 82% | 0% |
| September | 22°C | 78% | 0% | 0% | 0% | 16% | 83% | 0% |
| October | 21°C | 75% | 0% | 0% | 2% | 29% | 69% | 0% |
| November | 18°C | 60% | 8% | 13% | 23% | 42% | 15% | 0% |
| December | 11°C | 37% | 62% | 21% | 12% | 5% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is December, with the sky 34 percent covered on average; the cloudiest is August, at 75 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is February, averaging 15.8 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 20, with 12 h 32 min of daylight; the shortest is Dec 21, with 11 h 43 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Rumbek in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.