All Countries
Weather & Climate in Yei, South Sudan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Yei has a warm climate with an average annual temperature of 76°F (25°C). Winters average 78°F in January while summers reach 73°F in July / relatively mild seasonal variation. The area gets 246 sunny days per year, above the national average. Annual precipitation totals 49.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 2,743 feet.
Temperature
78°F Jan (25°C)
73°F Jul (23°C)
| Annual Average | 76.3°F |
| 41% above US avg | |
| January Average | 78°F (25°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 2,743 ft (836 m) |
| Area | 317.7 sq mi (822.7 km²) |
| Population Density | 821/sq mi |
| Coordinates | 4.0944°N, 30.6764°W |
| Timezone | Africa/Juba |
Precipitation & Snow
Air Quality
Earthquake History
8 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| May 27, 1990 | 18 km ESE of Juba, South Sudan | M5.0 | 142 km | 10 km |
| Jan 5, 2019 | 44 km SSE of Yumbe, Uganda | M4.8 | 138 km | 10 km |
| May 25, 1990 | 41 km SSW of Juba, South Sudan | M4.8 | 100 km | 10 km |
| Jul 19, 1990 | 66 km S of Juba, South Sudan | M4.6 | 98 km | 10 km |
| Jun 3, 1990 | 40 km SE of Juba, South Sudan | M4.6 | 144 km | 10 km |
| Jun 26, 2021 | 59 km E of Yei, South Sudan | M4.4 | 59 km | 10 km |
| Jul 7, 1990 | 39 km NNW of Juba, South Sudan | M4.1 | 149 km | 10 km |
| Jun 7, 2004 | 30 km W of Adjumani, Uganda | M3.7 | 121 km | 4 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 78°F (25°C) | 0.3 in | Driest |
| February | 79°F (26°C) | 0.6 in | Warmest |
| March | 79°F (26°C) | 2.3 in | |
| April | 78°F (26°C) | 5.0 in | |
| May | 77°F (25°C) | 6.3 in | |
| June | 75°F (24°C) | 6.3 in | |
| July | 73°F (23°C) | 6.7 in | Coldest |
| August | 74°F (23°C) | 7.4 in | Wettest |
| September | 75°F (24°C) | 6.0 in | |
| October | 75°F (24°C) | 6.4 in | |
| November | 76°F (25°C) | 2.0 in | |
| December | 76°F (24°C) | 0.5 in |
Yei has a seasonal temperature swing of 6°F / from 73°F in July to 79°F in February. Total annual precipitation is 49.9 inches, with August being the wettest month (7.4") and January the driest (0.3").