Yei, South Sudan experiences average highs of 31°C (88°F) and lows of 21°C (70°F) throughout the year. Rainfall is frequent, averaging about 15 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. Average highs have stayed broadly stable across the available records.
Yei, South Sudan Weather & Climate 2026
Monthly climate averages for Yei, South Sudan. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: May–Oct At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.1/10
Best: January, December
UV Index
8
High
Temperature 31°C / 21°C
Feels Like 34°C / 23°C
Rainy Days 15
Rainfall 103 mm
Sunshine 10 h
Humidity 65%
Wind Speed 11 km/h
Dew Point 18°C
Hottest Month
35°C
February
Avg Low24°C
Rain2days
Coldest Month
19°C
August
Avg High28°C
Rain25days
Driest Month
1days
January
Avg High34°C
Avg Low22°C
Windiest Month
14 km/h
March (Gusts 34)
Worst Time to Visit
Consider avoiding April, September, October due to heavy rainfall.
Sun Position
Sunrise 05:48
Daylight 12.4h
Sunset 18:10
Live conditions—
Yei on the map · live conditions
Yei, South Sudan
- Continent
- Africa
- Country
- South Sudan
- City
- Yei
- Population
- 260.7K
- Coordinates
- 4.09°, 30.68°
Seasonal Breakdown
Spring
Mar–May
Avg High 32°C
Avg Low 22°C
Rain 15 days/mo
Summer
Jun–Aug
Avg High 28°C
Avg Low 20°C
Rain 22 days/mo
Autumn
Sep–Nov
Avg High 29°C
Avg Low 20°C
Rain 20 days/mo
Winter
Dec–Feb
Avg High 34°C
Avg Low 22°C
Rain 2 days/mo
2/3 best months
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 34°C / 22°C . Feb: 35°C / 24°C . Mar: 34°C / 23°C . Apr: 31°C / 22°C . May: 30°C / 21°C . Jun: 29°C / 20°C . Jul: 28°C / 19°C . Aug: 28°C / 19°C . Sep: 28°C / 19°C . Oct: 29°C / 20°C . Nov: 30°C / 20°C . Dec: 32°C / 21°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 4 mm. Feb: 6 mm. Mar: 53 mm. Apr: 119 mm. May: 122 mm. Jun: 112 mm. Jul: 166 mm. Aug: 185 mm. Sep: 181 mm. Oct: 194 mm. Nov: 83 mm. Dec: 13 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 33%. Feb: 33%. Mar: 52%. Apr: 67%. May: 75%. Jun: 78%. Jul: 81%. Aug: 82%. Sep: 81%. Oct: 80%. Nov: 70%. Dec: 50%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 13 km/h . Feb: 13 km/h . Mar: 14 km/h . Apr: 13 km/h . May: 10 km/h . Jun: 9 km/h . Jul: 9 km/h . Aug: 9 km/h . Sep: 9 km/h . Oct: 9 km/h . Nov: 11 km/h . Dec: 12 km/h .
Sunshine
Sunshine
Sunshine: Jan: 11h. Feb: 11h. Mar: 11h. Apr: 10h. May: 10h. Jun: 10h. Jul: 10h. Aug: 10h. Sep: 10h. Oct: 10h. Nov: 10h. Dec: 11h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 9. Feb: UV 9. Mar: UV 9. Apr: UV 9. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 9. Oct: UV 9. Nov: UV 8. Dec: UV 8.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Feb 2025 · 37°C | Feb · 35°C |
| Coldest month | Aug 2025 · 19°C | Aug · 19°C |
| Wettest month | Aug 2025 · 235 mm | Oct · 194 mm |
| Windiest month | Mar 2025 · 13 km/h | Mar · 14 km/h |
Month-by-Month Weather Table
January best
Excellent 
February
Good March
Fair April
Poor May
Wet June
Wet July
Wet August
Wet September
Wet October
Wet November
Good December best
Excellent | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 34°C / 22°C | 34°C / 21°C | 1days (4 mm) Excellent | 10.9h Excellent | 33% Comfortable | 8.5 Very High | Excellent | View Details |
| February | 35°C / 24°C | 36°C / 23°C | 2days (6 mm) Excellent | 10.8h Excellent | 33% Comfortable | 8.9 Very High | Good | View Details |
| March | 34°C / 23°C | 36°C / 25°C | 10days (53 mm) Wet | 10.8h Excellent | 52% Moderate | 9.2 Very High | Fair | View Details |
| April | 31°C / 22°C | 35°C / 24°C | 16days (119 mm) Wet | 10.2h Excellent | 67% Muggy | 8.5 Very High | Poor | View Details |
| May | 30°C / 21°C | 34°C / 24°C | 18days (122 mm) Wet | 10.4h Excellent | 75% Muggy | 8.2 Very High | Wet | View Details |
| June | 29°C / 20°C | 32°C / 22°C | 18days (112 mm) Wet | 10.4h Excellent | 78% Humid | 7.9 Very High | Wet | View Details |
| July | 28°C / 19°C | 32°C / 22°C | 23days (166 mm) Wet | 9.9h Good | 81% Humid | 8 Very High | Wet | View Details |
| August | 28°C / 19°C | 32°C / 22°C | 25days (185 mm) Wet | 10.1h Excellent | 82% Humid | 8.2 Very High | Wet | View Details |
| September | 28°C / 19°C | 33°C / 22°C | 24days (181 mm) Wet | 10.3h Excellent | 81% Humid | 9 Very High | Wet | View Details |
| October | 29°C / 20°C | 33°C / 23°C | 24days (194 mm) Wet | 10h Excellent | 80% Humid | 8.5 Very High | Wet | View Details |
| November | 30°C / 20°C | 33°C / 23°C | 12days (83 mm) Wet | 10.4h Excellent | 70% Muggy | 8.3 Very High | Good | View Details |
| December best | 32°C / 21°C | 33°C / 22°C | 2days (13 mm) Excellent | 10.8h Excellent | 50% Moderate | 8.1 Very High | Excellent | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Yei are January, December, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Yei, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Yei is February, with average daytime highs of 35°C (96°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Yei is August, with average overnight lows of 19°C (67°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Yei is October, averaging 194mm of precipitation across 24 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Yei runs through August, September, October, July, with the heaviest rainfall in August. Based on 10-year averages for Yei.
Yei receives approximately 125 sunshine hours per year. The sunniest month is January with around 11 hours. Based on climate data for Yei.
The least favorable months to visit Yei are April, September, October, primarily due to heavy rainfall. For the best conditions, consider January, December instead.
The annual average UV index in Yei is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Yei is 65%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Average wind speeds in Yei are 11 km/h (7 mph). The windiest month is March with peak winds reaching 14 km/h (9 mph) (gusts up to 34 km/h / 21 mph).
Yei averages 2 clear-sky days per month with overall cloud cover around 64%. The clearest skies occur in January.
The annual average dew point in Yei is 18°C (64°F), which feels noticeably humid. Summer months may feel slightly sticky, but conditions remain manageable for most people.
Yei has a Tropical Monsoon climate, classified as Am under the Köppen system. Tropical climates are warm year-round with high rainfall and temperatures rarely dropping below 18°C (64°F).
The 'feels like' temperature in Yei ranges from 23°C (73°F) to 34°C (93°F) on average. Humidity and radiant heat mean it often feels warmer than the thermometer reads, especially in summer months.
June is not the best time to visit Yei, with a climate score of 6.3/10. Consider visiting during January, December instead for better conditions.
For June in Yei, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 29°C (83°F) and 18 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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