Yei in Spring

In spring (March, April and May), Yei sees average daytime highs around 31°C and overnight lows near 21°C, with 368 mm of rain over about 53 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.

Over the season highs ease from about 33°C in early March to 29°C by late May. The sky is clear or mostly clear about 16% of the time across spring, and the air most often feels muggy.

Spring is Yei's weakest season of the year to visit on our travel score. For the whole year in context, see Yei's year-round climate.

Avg daytime high: 31°C; 2nd-warmest season
Avg overnight low: 21°C
Rainfall: 368 mm; 53 wet days
Avg wind: 7 km/h
Travel score: 3.6; weakest season of the year
Months: Mar · Apr · May

← Winter Yei year-round climate Summer →

Spring Summer Fall Winter

Temperature in Yei in Spring

Average highAverage lowShaded bands: 10–90% of days

Over the season highs ease from about 33°C in early March to 29°C by late May.

A typical spring day in Yei reaches about 31°C and drops to 21°C overnight. The warmest of the three months is March, the coolest May.

How spring really feels in Yei

Once humidity and wind are folded in, spring brings about 45 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Yei weather by month

How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	33° / 21°	10	2	11.8	4.5
Feb	34° / 22°	15	3.5	11.9	3.7
Mar	33° / 22°	67	12.1	12	3.4
Apr	30° / 21°	146	19.7	12.1	3.5
May	29° / 20°	155	21.6	12.2	4.0
Jun	28° / 19°	143	21.8	12.2	4.4
Jul	27° / 19°	183	24.6	12.2	4.3
Aug	27° / 19°	199	26.9	12.1	4.0
Sep	28° / 19°	178	24.4	12	4.1
Oct	28° / 19°	225	25.9	11.9	3.8
Nov	29° / 20°	123	16	11.8	4.6
Dec	31° / 20°	21	4	11.8	5.3

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Yei gets around 368 mm of rain over 53 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 7 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 54 min in early March to 12 h 12 min by late May. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 5.7 kWh/m².

Planning a trip in spring

Hazard calendar for Yei

In seasonPeak

In spring, Yei overlaps its rainy season season. The full year is below, with each hazard's peak months called out.

Yei's rainy season runs April–November, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is spring a good time to visit Yei?

Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

3.6

Sightseeing

4th-best month of the year

5.3

Beach & pool

2nd-best month of the year

spring is a weaker month for outdoor sightseeing in Yei.

What to pack for Yei in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Yei sees daytime highs around 31°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 53 days see rain.

light clothesrain gearsun protection

UV index in Yei in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Yei peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 10 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	11	14	15	14	12	10	11	12	13	13	10	10
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high

	UV index (midday)	Level
Jan	11	Extreme
Feb	14	Extreme
Mar	15	Extreme
Apr	14	Extreme
May	12	Extreme
Jun	10	Extreme
Jul	11	Extreme
Aug	12	Extreme
Sep	13	Extreme
Oct	13	Extreme
Nov	10	Extreme
Dec	10	Very high

Air quality in Yei in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in Yei is worst in January — around 101 µg/m³ PM2.5 (unhealthy), about 7.6× the cleanest month (October, 13 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	101	55	27	15	14	21	22	17	14	13	18	49
Level	Unhealthy	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Poor

	PM2.5 (µg/m³)	Level
Jan	101	Unhealthy
Feb	55	Poor
Mar	27	Moderate
Apr	15	Moderate
May	14	Moderate
Jun	21	Moderate
Jul	22	Moderate
Aug	17	Moderate
Sep	14	Moderate
Oct	13	Moderate
Nov	18	Moderate
Dec	49	Poor

Location & terrain

Where is Yei?

Yei sits at 4.1°N, 30.7°E, 836 m above sea level, in South Sudan. The nearest listed city is Koboko, 82 km away.

Topography around Yei

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Yei.

Within 3 km, the terrain around Yei has only modest variations in elevation — a maximum elevation change of 62 m around an average of 824 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 156 m; within 80 km, large variations in elevation — a maximum elevation change of 1,060 m.

The land around Yei is covered by shrubs (46%) and trees (21%) within 3 km, shrubs (51%) and grassland (34%) within 16 km, and shrubs (50%) and trees (34%) within 80 km.

3 km

62 m

shrubs 46%

16 km

156 m

shrubs 51%

80 km

1,060 m

shrubs 50%

treesshrubsgrasslandcroplandartificial surfaces

← Winter Yei year-round climate Summer →

Spring weather nearby: Koboko 82 km · Yumbe 94 km · Arua 122 km · Moyo 126 km · Juba 131 km · Aru 138 km · Adjumani 147 km · Watsa 173 km

South Sudan travel facts

Travel advisory: Level 4; Do Not Travel
Prices: ≈ 6% of US; price level, 2021
GDP per capita: $1,080; 2015
Happiness: 2.8 / 10; World Happiness, 2019
Homicide rate: 14; per 100k, 2012
Road deaths: 36.7; per 100k/yr, 2019
Income group: Low; World Bank
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Yei (4.0944°, 30.6764°, elevation 836 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.