4 Billion Years On

South Sudan Climate – June 2026 Update

Top 5 Cities: Juba, Wau, Malakal, Yei, and Aweil

This month in numbers

South Sudan recorded its 5th warmest June on record, with an average temperature of 28.42°C, marking an anomaly of +2.2°C compared to the 1961–1990 baseline. Globally, June 2026 was the 3rd warmest June on record for land temperatures. The April–June 2026 period also ranked as the 8th warmest for South Sudan, with an anomaly of +2°C.

What changed

Over the past three months (April–June 2026), South Sudan experienced significantly warmer conditions, with temperatures averaging 29.5°C. This continues a long-term warming trend for the country, which has seen an increase of +2.03°C compared to the 1961–1990 baseline. South Sudan's June anomaly of +2.2°C was notably warmer than the overall Africa group average of +1.58°C, placing it as the 2nd warmest country within the group for the month.

What’s driving change?

The current climate patterns are strongly influenced by a weak El Niño, which is present and expected to strengthen into the Northern Hemisphere winter 2026-27. El Niño typically brings suppressed rainfall during the June–September season to northern parts of East Africa, including South Sudan, and this is contributing to warmer and drier conditions in many areas. The UN Office for the Coordination of Humanitarian Affairs (OCHA) has warned of intensifying drought risks and above-average temperatures across much of South Sudan during the June-September rainy season. This is further exacerbated by the effect, contributing to the observed temperature anomalies.

Looking ahead

Seasonal forecasts indicate a high likelihood of below-average rainfall and above-average temperatures across much of South Sudan during the June–September rainy season, increasing the risk of drought and water shortages. However, the strengthening El Niño is historically associated with enhanced rainfall during the October–December "short rains" season for the equatorial Horn of Africa, which could bring wetter-than-normal conditions and a potential for flooding later in the year.

Generated by Gemini from climate data and web sources

At a Glance

Temperature – Average

South Sudan
Global
Land + Ocean
Jun
+3.0°C· 5th
29.2°C
+1.0°C· 2nd
16.6°C
Record
30.3°C (1964)
16.7°C (2024)
Apr–Jun
+2.0°C· 8th
29.5°C
+1.0°C· 2nd
15.8°C
Record
31.1°C (2024)
15.9°C (2024)
2025
+1.5°C· 12th
28.2°C
+1.0°C· 3rd
15.0°C
Record
29.2°C (2024)
15.2°C (2024)
Headline: anomaly vs the 1961–1990 mean · Small figure: the actual value · Record = highest (or lowest) value on record

Year-on-Year Trends

The 4byo Climate Helix – South Sudan

1940202619611990 baselineColdest (1950)20162025 meanWarmest (2024)2026 so far
2026Jun
2024
WetDryJanFebMarAprMayJunJulAugSepOctNovDecWet Start+2 daysWet End+1 days25°30°
Temp
29.1°C
+2.5 vs base
Rainfall
mm
ENSO
ONI 3-mo mean
Playback
8×
Mode
Metric
Presets

Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.

South Sudan – Monthly Temperature – All Years

Metric
All years since 19872024 (warmest)2026 (current year)

Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.

Records – South Sudan

Warmest year
2024
29.2°C
Coldest year
1950
25.1°C
2026 so far
#23/87
29.1°C

Our World in Data / NOAA - Anomalies vs 1901-2000 mean

Shifting Seasons

Wet / dry seasonsKöppen Aw · Tropical

South Sudan doesn't have a warm/cold cycle - its monthly temperature range is only 4.4°C across the year - but it does have a strong wet/dry cycle (the wettest month gets 77× as much rain as the driest). So we track how the wet season has shifted instead.

Shifting wet season
1 day shorter
Wet season
1940–1969 baseline: 4 Jun → 6 Sept · 94 days
2016–2025 now: 7 Jun → 7 Sept · 92 days
J
F
M
A
M
J
J
A
S
O
N
D
Onset 2 days laterEnd 1 day later
-0.7% annual rain
baseline yr·recent yr·ring = global temp anomaly
Wet-season onset
4 Jun7 Jun
2 days later
When 25% of annual rain has fallen
Wet-season end
6 Sept7 Sept
1 day later
When 75% of annual rain has fallen
Peak-rain month
AugAug
unchanged
Wet months: 66

Monthly rainfall climatology. A “wet month” exceeds the baseline monthly mean (dashed gold line). Biggest month-to-month shift: Apr (-9 mm, -12%).

Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.

Rainfall & Precipitation

Rainfall & Rain Days – Totals

Rainfall / Precipitation
South Sudan
n/a
n/a· n/a
Record
n/a
n/a
n/a· n/a
Record
n/a
2024
-497 mm· 82nd
763 mm
Record
1777 mm (1950)

Headline: anomaly vs the 1961–1990 mean. Small figure: the actual value. Rank: position in the full record (1st = highest ever). Record: highest (or lowest) value on record with its year.

Climate Systems

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Emissions & Energy

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Explore Climate Data

Data Sources

Data Sources for South Sudan

Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) - see the Methodology & Sources page for the complete dataset list and update calendar.

FAQs

FAQs

How is the climate in South Sudan changing?

South Sudan is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The headline panel also shows the long-term trend rate per decade and the warmest and coolest years on file.

Where does the climate data for South Sudan come from?

Climate data for South Sudan comes from Our World in Data, sourcing Copernicus ERA5 and HadCRUT5 (national temperature anomaly) and the Global Carbon Project via Our World in Data (CO₂ emissions), refreshed every month, when the upstream temperature and rainfall data are refreshed.

What is the climate baseline used on this page?

Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.

Which areas does the South Sudan climate data cover?

The South Sudan climate profile covers Juba, Wau, Malakal, Yei and surrounding areas. Temperature, rainfall and emissions data for South Sudan

How often is the South Sudan climate update refreshed?

The South Sudan climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.