4 Billion Years On

Eswatini Climate – June 2026 Update

This month in numbers

Eswatini experienced a significantly warmer June 2026, with an average temperature of 15.47°C, marking a +1.0°C anomaly compared to the 1961–1990 baseline. This ranks as the 23rd warmest June in 86 years of records. Globally, June 2026 was the 3rd warmest June on record for land temperature, with an anomaly of +1.0°C. The three-month period from April to June 2026 also saw above-average temperatures in Eswatini, ranking as the 28th warmest on record.

What changed

The past three months (April–June 2026) in Eswatini were warmer than average, with a +0.7°C anomaly. This trend aligns with the country's long-term warming trend of +0.74°C since the 1961–1990 baseline. Eswatini's 12-month rolling anomaly places it 201st out of 234 regions, indicating that while it is experiencing warming, many other regions globally are warming at a faster rate. The country has also been experiencing a growing pattern of extreme weather events, including hailstorms, which are becoming more frequent and intense.

What’s driving change?

The persistent warmer temperatures in Eswatini are part of a broader global trend, with land warming faster than the ocean. The El Niño–Southern Oscillation (ENSO) has been in a La Niña phase, which typically brings wetter, rainier weather to southern Africa. However, forecasts suggested a transition to ENSO-neutral conditions in early 2026, with a possibility of El Niño developing from June. Eswatini has recently experienced significant hailstorms, with one event in late April 2026 damaging over 289 homes in the Lubombo and Hhohho regions. These events highlight the country's vulnerability to extreme weather.

Looking ahead

Seasonal forecasts suggest that ENSO-neutral conditions are likely to persist through late autumn 2026, with some models indicating a possibility of El Niño development from June.

Generated by Gemini from climate data and web sources

At a Glance

Temperature – Average

Eswatini
Global
Land + Ocean
Jun
+2.3°C· 2nd
16.5°C
+1.0°C· 2nd
16.6°C
Record
16.6°C (2023)
16.7°C (2024)
Apr–Jun
+1.6°C· 4th
18.6°C
+1.0°C· 2nd
15.8°C
Record
18.7°C (1941)
15.9°C (2024)
2025
+0.7°C· 11th
19.9°C
+1.0°C· 3rd
15.0°C
Record
20.6°C (2015)
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 – Eswatini

1940202619611990 baselineColdest (1955)20162025 meanWarmest (2015)2026 so far
2026Jun
WetDryJanFebMarAprMayJunJulAugSepOctNovDec1901-302016-25Wet Start+5 daysWet End+1 days15°20°25°
Temp
20.9°C
+1.6 vs base
Rainfall
mm
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.

Eswatini – Monthly Temperature – All Years

Metric
All years since 19872015 (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 – Eswatini

Warmest year
2015
20.6°C
Coldest year
1955
18.0°C
2026 so far
#5/87
20.9°C

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

Shifting Seasons

Warm/cold + wet/dryKöppen Cwa · Temperate

Eswatini has both a clear warm/cold cycle (±4.0°C) and a wet/dry cycle (19× wet:dry ratio). Both sides of the annual rhythm are shown below.

Shifting summer
24 days longer
Warm season
1940–1969 baseline: 24 Sept → 20 Apr · 208 days
2016–2025 now: 10 Sept → 1 May · 232 days
J
F
M
A
M
J
J
A
S
O
N
D
Spr 14 days earlierAut 11 days later
Shifting wet season
4 days shorter
Wet season
1940–1969 baseline: 14 Nov → 21 Feb · 99 days
2016–2025 now: 19 Nov → 22 Feb · 95 days
J
F
M
A
M
J
J
A
S
O
N
D
Onset 5 days laterEnd 1 day later
-0.5% annual rain
baseline yr·recent yr·ring = global temp anomaly
Wet-season onset
14 Nov19 Nov
5 days later
When 25% of annual rain has fallen
Wet-season end
21 Feb22 Feb
1 day later
When 75% of annual rain has fallen
Peak-rain month
JanFeb
+1 month
Wet months: 65

Monthly rainfall climatology. A “wet month” exceeds the baseline monthly mean (dashed gold line). Biggest month-to-month shift: Mar (-30 mm, -28%).

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
Eswatini
n/a
n/a· n/a
Record
n/a
n/a
n/a· n/a
Record
n/a
2024
-122 mm· 64th
775 mm
Record
1454 mm (2000)

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.

Emissions & Energy

Explore

Explore Climate Data

Data Sources

Data Sources for Eswatini

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 Eswatini changing?

Eswatini 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 Eswatini come from?

Climate data for Eswatini 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 Eswatini climate data cover?

Temperature, rainfall and emissions data for Eswatini Eswatini climate profile with temperature anomalies, rainfall (CRU TS), warm/wet-season shift analysis, CO₂ emissions (Our World in Data) and electricity generation mix — all vs the 1961–1990 baseline..

How often is the Eswatini climate update refreshed?

The Eswatini 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.