Full Breakdown
May 2026 Marks the World’s Second-Hottest Month on Record
6/11/2026, 2:51:26 AM
Record-Breaking May Temperatures
In May 2026 the Copernicus Climate Change Service (C3S) recorded the second-hottest May since systematic observations began, surpassed only by May 2024. Western Europe experienced an early “heat dome” of warm air from northern Africa that produced feels-like temperatures of 35 °C to 40 °C across large areas. Simultaneously, fatal floods were reported in China and Turkey, illustrating the breadth of extreme weather linked to the month’s climate anomalies.
Climate Drivers and Context
C3S attributed the record heat to the combined influence of long-term anthropogenic warming and a developing El Niño pattern. El Niño naturally recurs every two to seven years when weakened trade winds warm eastern Pacific waters, a process that raises global temperatures and disrupts regional rainfall, producing drought in some zones and heavy precipitation in others. The early onset of El Niño in 2026 amplified the European heatwave and heightened the risk of further extremes worldwide.
Key Data and Statistics
- Global average temperature in May 2026 was 1.42 °C above the 19th-century pre-industrial baseline (C3S).
- Surface air temperature averaged 15.81 °C, the second-highest on record after May 2024.
- Sea-surface temperature was also the second-highest on record, trailing only May 2024.
- Feels-like temperatures of 35 °C–40 °C were reported across much of western Europe.
- The World Meteorological Organization (WMO) assigned an 80 % probability that El Niño will develop between June and August.
Impact on Europe and Other Regions
The rapid transition from cooler-than-average conditions to intense heat left limited time for populations, crops, and ecosystems to acclimatise during the growing season. In Bordeaux, France, women were observed walking with umbrellas to shield themselves from the sun, a visual cue of the unusual intensity. The concurrent floods in China and Turkey caused loss of life and underscored the simultaneous occurrence of heat and heavy-rain hazards.
Official Statements & Responses
C3S noted that the extreme European heat “was in line with scientists’ expectations of how climate change will affect the world’s fastest-warming continent.” Samantha Burgess, strategic lead for climate at the European Centre for Medium-Range Weather Forecasts (ECMWF), said the event “demonstrates how quickly climate extremes are becoming the new normal rather than the exception.” The WMO warned that the high likelihood of El Niño “increases the risk of extreme weather events.”
Conflicting Reports & Gaps
The two sources present global temperature differently: one as an anomaly (+1.42 °C above pre-industrial) and the other as an absolute average (15.81 °C). Neither source provides a precise forecast of El Niño strength, leaving uncertainty about the magnitude of forthcoming temperature spikes.
Outlook
Forecasts suggest El Niño could become one of the strongest on record, potentially pushing global temperatures to historic highs by 2027. Continued monitoring by C3S, ECMWF, and the WMO will be essential to anticipate and mitigate further heatwaves, floods, and related climate impacts.
Verbatim Quotes
- “The month was marked by a rapid transition from much cooler-than-average conditions to one of the most intense heatwaves ever observed this early in the year in western Europe,” — Copernicus Climate Change Service
- “Feels-like” temperatures reached 35 deg C to 40 deg C across large parts of Europe, Copernicus said.” — Copernicus Climate Change Service
- “unusually early and intense heatwave demonstrates how quickly climate extremes are becoming the new normal rather than the exception” — Samantha Burgess, strategic lead for climate at the European Centre for Medium-Range Weather Forecasts
- “El Nino has an 80 per cent chance of developing between June and August, increasing the risk of extreme weather events, the World Meteorological Organization said last week.” — World Meteorological Organization
- “• C3S says the extreme heat in Europe was in line with scientists' expectations of how climate change will affect the world's fastest-warming continent.” — Copernicus Climate Change Service
