Climate averages 1991–2020
Yei weather
in January.
A hot, very dry month: the 2nd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Yei: daytime highs average 33.3°C and nights cool to about 21.6°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 9.5 mm of rain on roughly 2 days, which makes January a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 55 min on an average January day.
The nearest other city in this atlas is Arua (122 km away). In January its highs average 30.2°C, 3.1°C cooler than Yei, with 9.7 mm of rain.
Among the 6 cities listed in South Sudan, Yei ranks 6th of 6 for the warmest January highs and 6th of 6 for the driest January (rainfall, lowest first). The mean January high of those 6 cities is 35.3°C; Yei is 2.0°C cooler than that mean.
From January to February, average highs rise by 1.1°C to 34.4°C, and monthly rainfall rises from 9.5 mm to 15 mm.
The annual picture
January 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
Yei climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 33.3°C21.6°C | 21.6°C | 9.5 | 2.0 | 11.912 h |
| February | 34.4°C22.7°C | 22.7°C | 15 | 3.4 | 12.012 h |
| March | 33.0°C22.5°C | 22.5°C | 67 | 12.2 | 12.112 h |
| April | 30.6°C21.4°C | 21.4°C | 146 | 19.7 | 12.212 h |
| May | 29.0°C20.5°C | 20.5°C | 155 | 21.7 | 12.312 h |
| June | 27.9°C19.5°C | 19.5°C | 143 | 22.0 | 12.412 h |
| July | 27.3°C18.8°C | 18.8°C | 183 | 24.6 | 12.312 h |
| August | 27.5°C18.8°C | 18.8°C | 199 | 27.2 | 12.212 h |
| September | 27.9°C19.0°C | 19.0°C | 178 | 24.4 | 12.112 h |
| October | 28.0°C19.3°C | 19.3°C | 225 | 25.9 | 12.012 h |
| November | 29.1°C19.7°C | 19.7°C | 123 | 16.2 | 11.912 h |
| December | 31.2°C20.4°C | 20.4°C | 21 | 4.0 | 11.912 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
January in nearby cities
- Arua in JanuaryUganda · 122 kmHigh 30.2°C · Low 19.4°C · 9.7 mm rain
- Juba in JanuarySouth Sudan · 131 kmHigh 35.9°C · Low 23.9°C · 3.0 mm rain
- Gulu in JanuaryUganda · 232 kmHigh 31.7°C · Low 20.5°C · 18 mm rain
- Bunia in JanuaryDemocratic Republic of the Congo · 286 kmHigh 27.4°C · Low 17.5°C · 34 mm rain
- Masindi in JanuaryUganda · 293 kmHigh 29.6°C · Low 19.2°C · 31 mm rain
- Hoima in JanuaryUganda · 305 kmHigh 28.7°C · Low 18.8°C · 66 mm rain
- Lira in JanuaryUganda · 321 kmHigh 31.1°C · Low 19.6°C · 22 mm rain
- Bakwa in JanuaryDemocratic Republic of the Congo · 364 kmHigh 33.4°C · Low 22.0°C · 17 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 Yei) is explained once on the Yei year overview and on the Sources, method and limits page.