Climate averages 1991–2020
Juba weather
in September.
A hot, wet month: the 10th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Juba: daytime highs average 30.2°C and nights cool to about 21.7°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 113 mm of rain on roughly 18 days, which makes September a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 09 min on an average September day.
The nearest other city in this atlas is Yei (131 km away). In September its highs average 27.9°C, 2.2°C cooler than Juba, with 178 mm of rain.
Among the 6 cities listed in South Sudan, Juba ranks 5th of 6 for the warmest September highs and 1st of 6 for the driest September (rainfall, lowest first). The mean September high of those 6 cities is 30.0°C; Juba is 0.1°C warmer than that mean.
From September to October, average highs rise by 0.2°C to 30.3°C, and monthly rainfall rises from 113 mm to 172 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Juba climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 35.9°C23.9°C | 23.9°C | 3.0 | 0.9 | 11.912 h |
| February | 37.4°C25.2°C | 25.2°C | 5.8 | 1.4 | 12.012 h |
| March | 36.6°C25.6°C | 25.6°C | 30 | 7.2 | 12.112 h |
| April | 34.0°C24.5°C | 24.5°C | 98 | 15.4 | 12.212 h |
| May | 31.7°C23.3°C | 23.3°C | 122 | 18.6 | 12.312 h |
| June | 30.4°C22.2°C | 22.2°C | 111 | 17.2 | 12.412 h |
| July | 29.6°C21.5°C | 21.5°C | 127 | 19.1 | 12.412 h |
| August | 29.5°C21.4°C | 21.4°C | 135 | 21.0 | 12.312 h |
| September, selected | 30.2°C21.7°C | 21.7°C | 113 | 18.1 | 12.112 h |
| October | 30.3°C21.9°C | 21.9°C | 172 | 20.8 | 12.012 h |
| November | 31.7°C22.3°C | 22.3°C | 72 | 11.6 | 11.912 h |
| December | 34.2°C23.0°C | 23.0°C | 9.2 | 2.2 | 11.812 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Yei in SeptemberSouth Sudan · 131 kmHigh 27.9°C · Low 19.0°C · 178 mm rain
- Arua in SeptemberUganda · 217 kmHigh 26.6°C · Low 17.2°C · 105 mm rain
- Gulu in SeptemberUganda · 244 kmHigh 27.5°C · Low 18.3°C · 163 mm rain
- Lira in SeptemberUganda · 324 kmHigh 27.9°C · Low 18.1°C · 117 mm rain
- Kotido in SeptemberUganda · 351 kmHigh 28.8°C · Low 17.7°C · 44 mm rain
- Masindi in SeptemberUganda · 354 kmHigh 26.7°C · Low 18.1°C · 145 mm rain
- Hoima in SeptemberUganda · 381 kmHigh 26.5°C · Low 18.1°C · 280 mm rain
- Bunia in SeptemberDemocratic Republic of the Congo · 395 kmHigh 26.0°C · Low 17.5°C · 129 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Juba) is explained once on the Juba year overview and on the Sources, method and limits page.