Western Europe Records Its Hottest June Ever as Global Temperatures Remain Exceptionally High

Western Europe experienced its hottest June on record in 2026, while the planet as a whole recorded its second-warmest June in the available ERA5 climate dataset. The latest figures from the World Meteorological Organization and the Copernicus Climate Change Service provide another indication of how extreme heat is becoming an increasingly important climate and public-health challenge.

According to the latest assessment, Western Europe recorded an average temperature of 20.74°C in June 2026, which was approximately 3.05°C above the 1991–2020 average for the month. The previous Western European June record, set only in 2025, was surpassed.

Globally, June 2026 had an average surface air temperature of approximately 16.54°C, which was 0.56°C above the 1991–2020 average. Only June 2024 was warmer in the ERA5 record.

The figures are significant because the heat was not confined to a small area. Large parts of Europe experienced exceptional temperatures, while marine heatwaves affected surrounding seas.

Western Europe Breaks Its June Temperature Record

Western Europe was the most striking regional hotspot during June.

The region’s average temperature reached 20.74°C, making June 2026 its warmest June since records began. The difference from the long-term average was particularly large, showing that the event was not simply a marginal record.

Several countries experienced extraordinary temperatures during the month.

Germany recorded temperatures above 40°C at numerous weather stations. The town of Coschen recorded 41.7°C on June 28, while hundreds of stations reported their highest temperatures ever recorded.

France, Spain, the United Kingdom, the Netherlands, Denmark, Switzerland, Austria, Poland and other European countries also experienced exceptional heat.

Germany Records Extreme Temperatures

Germany experienced one of the most remarkable heat episodes.

According to the WMO, 252 German weather stations recorded all-time temperature records during the event. Temperatures exceeded 40°C at dozens of locations.

Night-time temperatures were also unusually high.

A weather station in eastern Saxony recorded an overnight minimum of 29.4°C, illustrating that the heat did not disappear after sunset.

High nighttime temperatures are particularly concerning for human health because the body normally relies on cooler nighttime conditions to recover from daytime heat.

When nights remain exceptionally warm, people can experience prolonged heat stress.

France Experiences Severe Heat

France also faced an extraordinary period of heat.

The country recorded its hottest day on record on June 24, according to the WMO’s summary of national meteorological data.

The national average temperature reached around 30°C, while temperatures in some locations climbed dramatically higher.

Palluau in western France recorded 43.8°C, according to the WMO.

Authorities issued high-level heat warnings across much of the country.

The combination of extreme heat, dry conditions and low humidity also increased wildfire danger.

Spain Faces Record Heat

Spain experienced similarly intense conditions.

The country recorded its hottest June days on June 23 and 24, with temperatures above 40°C in several locations.

Bilbao reached 42.7°C, its highest June temperature on record, according to the WMO.

The heat also affected the wider Iberian Peninsula, where drought conditions and high temperatures increased wildfire risks.

The combination of heat and dryness can rapidly increase vegetation stress and make fires easier to ignite and harder to control.

The United Kingdom Also Breaks Records

The United Kingdom experienced unusually high temperatures as well.

Southern England reached 37.3°C on June 25, according to the WMO’s report.

The UK’s Met Office issued red warnings for extreme heat for three consecutive days, a notable development in the country’s modern warning system.

The event demonstrated that extreme heat is increasingly relevant even in countries traditionally associated with relatively moderate summer temperatures.

Marine Heatwaves Add Another Dimension

The June heat was not limited to land.

The western Mediterranean and parts of the Atlantic coastline experienced marine heatwaves.

Globally, the average sea-surface temperature across the extra-polar oceans between 60°S and 60°N reached the highest June level on record, narrowly exceeding the previous June record from 2024 by 0.01°C.

Ocean temperatures matter because seas and oceans absorb enormous quantities of heat.

Warmer oceans can influence weather patterns, marine ecosystems and the intensity of certain climate extremes.

They can also contribute to changes in rainfall and storm behaviour.

Why High Ocean Temperatures Matter

Marine heatwaves can have serious consequences for ocean ecosystems.

Fish and other marine organisms may move toward cooler waters when temperatures rise.

Coral reefs and other temperature-sensitive ecosystems can also experience stress.

Changes in marine conditions can ultimately affect fishing communities and food systems.

The unusually high June sea-surface temperatures therefore represent more than another climate statistic.

Global June Was the Second Warmest

Although Western Europe experienced a record-breaking month, the global picture was also remarkable.

June 2026 ranked as the second-warmest June globally in the ERA5 dataset.

The global average surface air temperature reached 16.54°C, approximately 0.56°C above the 1991–2020 June average.

The only warmer June in this dataset was June 2024.

This means that two of the three warmest Junes in the record have occurred very recently.

Heat and Human Health

Extreme heat is a major public-health concern.

Very high temperatures can increase the risk of heat exhaustion and heatstroke.

Older adults, infants, people with certain chronic conditions and outdoor workers can be particularly vulnerable.

The danger can become greater when temperatures remain high overnight because the body has less opportunity to recover.

Heat can also increase pressure on hospitals and emergency medical services.

Workers Face Increased Risks

People who work outdoors are especially exposed during heatwaves.

Construction workers, agricultural workers, delivery personnel and other outdoor employees may spend several hours under direct sunlight or in hot environments.

Extreme temperatures can reduce physical performance and increase the risk of dehydration and heat-related illness.

Employers may therefore need to adjust working schedules, provide adequate hydration and create opportunities for workers to rest in cooler environments.

Wildfire Risk Increases

The European heatwave also contributed to worsening wildfire conditions.

High temperatures increase evaporation and dry vegetation.

When combined with low rainfall and dry soils, these conditions can create an environment in which fires spread rapidly.

The Iberian Peninsula and southern France were among the areas facing increased wildfire activity during the period.

Wildfires can create additional health risks through smoke pollution, even for people living far from the immediate fire zone.

Drought Becomes More Difficult to Manage

Extreme heat and drought often reinforce each other.

High temperatures increase evaporation from soil and vegetation.

If rainfall is insufficient, soil moisture declines further.

Dry soil can then make landscapes more vulnerable to additional heat.

The WMO reported widespread dryness across Europe during June, with heat worsening existing drought conditions in parts of the continent.

This can affect agriculture, water supplies and ecosystems.

Climate Change and Extreme Heat

The WMO has warned that heatwaves are expected to occur with increasing frequency, intensity and duration as the climate changes.

Europe is particularly exposed.

According to WMO climate information cited in its June assessment, Europe as a whole has warmed by around 2°C over the past 50 years, making it the fastest-warming continent.

This does not mean every individual heatwave can be attributed entirely to climate change.

However, long-term warming raises the baseline temperature, making extreme heat events more likely and potentially more intense.

El Niño Adds Another Climate Factor

The June heat occurred as El Niño conditions were developing in the tropical Pacific.

The WMO had warned earlier in 2026 that an emerging El Niño could influence global temperature and rainfall patterns during the coming months.

The organisation estimated an approximately 80% probability of El Niño conditions during June–August 2026, with the probability rising to around 90% later in the forecast period.

El Niño is a natural climate phenomenon, but its effects occur against the background of long-term human-caused warming.

Heatwaves Are Becoming a Planning Challenge

The latest European heatwave demonstrates why governments need strong heat-health plans.

Early warnings can give communities time to prepare.

Authorities can open cooling centres, issue public-health messages, protect vulnerable populations and adjust emergency medical capacity.

Cities can also invest in trees, green spaces, shade structures and building designs that reduce heat exposure.

Urban Areas Face Additional Pressure

Cities can become particularly hot because buildings, roads and other surfaces absorb and retain heat.

This urban heat-island effect can make temperatures higher than in surrounding rural areas.

As European cities experience more frequent heatwaves, urban planning will become an increasingly important part of climate adaptation.

Green spaces and tree cover can provide shade and help reduce local temperatures.

Economic Consequences

Extreme heat can also affect economies.

Workers may become less productive when temperatures become dangerously high.

Agriculture can suffer from heat and drought.

Energy demand may increase as households and businesses use more cooling equipment.

Transport infrastructure can also be affected by extreme temperatures.

The economic cost of a heatwave therefore extends well beyond the weather itself.

The Importance of Early Warning Systems

The WMO and its partners are promoting early-warning and heat-health systems to reduce the impact of extreme temperatures.

Such systems combine weather forecasts with health information so that authorities can identify dangerous conditions before they peak.

Early warnings are especially valuable when they are accompanied by clear instructions about what people should do.

What People Can Do During Extreme Heat

During severe heat, people can reduce their exposure by staying in cooler locations, drinking sufficient fluids and avoiding unnecessary strenuous activity during the hottest part of the day.

People should also pay attention to vulnerable relatives, neighbours and friends.

However, individual action is only one part of the solution.

Effective heat protection also requires public infrastructure, healthcare preparedness and reliable warning systems.

The Bigger Climate Picture

The June 2026 statistics provide another example of how climate extremes are increasingly affecting societies.

A single month does not determine the long-term climate trend.

But repeated records across different regions provide important information about how the climate system is evolving.

Western Europe’s record June, combined with the second-warmest June globally and record ocean temperatures, highlights the need for continued monitoring.

Conclusion

June 2026 delivered an extraordinary collection of climate statistics.

Western Europe recorded its hottest June on record, with an average temperature of 20.74°C, around 3.05°C above its 1991–2020 average. Globally, June was the second-warmest June ever recorded in the ERA5 dataset, with an average surface temperature of 16.54°C.

Several European countries experienced unprecedented temperatures, while marine heatwaves affected surrounding oceans.

The consequences extended beyond uncomfortable weather, contributing to health risks, drought, wildfire danger and pressure on infrastructure.

The statistics reinforce a broader message from climate scientists: extreme heat is becoming a major risk that governments, cities, businesses and communities must prepare for.

Better forecasting, early warnings, climate-resilient infrastructure, urban adaptation and stronger heat-health policies will be increasingly important.

The record-breaking June of 2026 is therefore not simply a story about temperature. It is a reminder that climate extremes can affect health, agriculture, water, ecosystems, economies and everyday life simultaneously.