4 Billion Years On

Mexico Climate – June 2026 Update

Top 5 Cities: Mexico City, Guadalajara, Monterrey, Puebla, and Tijuana

This month in numbers

Mexico experienced its 15th warmest June on record in 2026, with an average temperature of 25.37°C, marking an anomaly of +1.3°C above the 1961–1990 baseline. Globally, June 2026 was the 3rd warmest June on record for land temperatures, with an anomaly of +1°C. Looking at the broader picture, the April–June 2026 period in Mexico was the 6th warmest on record, with an average temperature of 24.19°C, an anomaly of +1.4°C.

What changed

Mexico's average temperature for the April–June 2026 period was +1.4°C above the 1961–1990 baseline, placing it as the 6th warmest such period on record. This trend aligns with Mexico's long-term warming, which has seen an increase of +1.39°C compared to the 1961–1990 baseline, with 2025 being the warmest year on record. The country's 1-month anomaly for June 2026 was 0.14°C warmer than the North America group average. Mexico has also seen significant rainfall and associated flooding during June, with events in Puebla, Mérida, and Mexico City. Tropical Storm Boris also made landfall in early June, bringing heavy rainfall and flooding to southern Pacific coastal areas.

What’s driving change?

The current weak El Niño phase, with an anomaly of +0.98°C in the NOAA ONI 3-month (April-June 2026), is a significant factor, typically bringing warmer and drier conditions to Mexico and Central America during the rainy season, increasing drought risk. However, despite the El Niño, Mexico has seen substantial rainfall and flooding events in June, including a catastrophic flash flood in Cuajimalpa, Mexico City, on June 1st, and heavy rainfall in Puebla on June 28th. This suggests other atmospheric dynamics are at play, potentially including shifts in regional weather patterns that are overriding the typical El Niño drying influence. Mexico is also experiencing an increase in heat stress days, with a new study indicating one to two more months of heat stress compared to several decades ago.

Looking ahead

The NOAA CPC forecast indicates a 100% probability of El Niño continuing through the end of 2026, suggesting a continued likelihood of warmer and drier conditions for Mexico, despite recent heavy rainfall events. ENSO

Generated by Gemini from climate data and web sources

At a Glance

Temperature – Average

Mexico
Global
Land + Ocean
Jun
+1.3°C· 15th
25.5°C
+1.0°C· 2nd
16.6°C
Record
26.9°C (2023)
16.7°C (2024)
Apr–Jun
+1.5°C· 5th
24.3°C
+1.0°C· 2nd
15.8°C
Record
25.3°C (2024)
15.9°C (2024)
2025
+1.7°C· 3rd
21.7°C
+1.0°C· 3rd
15.0°C
Record
22.0°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 – Mexico

1940202619611990 baselineColdest (1941)20162025 meanWarmest (2024)2026 so far
2026Jun
2024
WetDryJanFebMarAprMayJunJulAugSepOctNovDecWet Start−1 daysWet End−2 days15°20°25°
Temp
21.4°C
+1.4 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.

Mexico – 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 – Mexico

Warmest year
2024
22.0°C
Coldest year
1941
19.0°C
2026 so far
#2/87
21.4°C

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

Shifting Seasons

Warm/cold + wet/dryKöppen Cwa · Temperate

Mexico has both a clear warm/cold cycle (±4.9°C) and a wet/dry cycle (9× wet:dry ratio). Both sides of the annual rhythm are shown below.

Shifting summer
39 days longer
Warm season
1940–1969 baseline: 5 Apr → 20 Oct · 198 days
2016–2025 now: 15 Mar → 7 Nov · 237 days
J
F
M
A
M
J
J
A
S
O
N
D
Spr 21 days earlierAut 18 days later
Shifting wet season
1 day shorter
Wet season
1940–1969 baseline: 3 Jul → 29 Sept · 89 days
2016–2025 now: 1 Jul → 28 Sept · 88 days
J
F
M
A
M
J
J
A
S
O
N
D
Onset 1 day earlierEnd 2 days earlier
+4.8% annual rain
baseline yr·recent yr·ring = global temp anomaly
Wet-season onset
3 Jul1 Jul
1 day earlier
When 25% of annual rain has fallen
Wet-season end
29 Sept28 Sept
2 days earlier
When 75% of annual rain has fallen
Peak-rain month
SepSep
unchanged
Wet months: 55

Monthly rainfall climatology. A “wet month” exceeds the baseline monthly mean (dashed gold line). Biggest month-to-month shift: Aug (+18 mm, +15%).

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
Mexico
n/a
n/a· n/a
Record
n/a
n/a
n/a· n/a
Record
n/a
2024
-4 mm· 38th
791 mm
Record
1045 mm (1984)

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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Data Sources

Data Sources for Mexico

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 Mexico changing?

Mexico 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 Mexico come from?

Climate data for Mexico 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 Mexico climate data cover?

The Mexico climate profile covers Mexico City, Guadalajara, Monterrey, Puebla and surrounding areas. Temperature, rainfall and emissions data for Mexico

How often is the Mexico climate update refreshed?

The Mexico 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.