Europe faces widening heatwave as climate anomaly drives temperatures 10C above average
A rapidly intensifying heatwave is sweeping across Europe this week as a mass of hot air from the Sahara expands northwards, pushing temperatures well above seasonal norms and triggering warnings across several countries.
Southern and western Europe are already experiencing the strongest conditions, with Spain, Portugal and parts of France seeing widespread highs in the low to mid-30s Celsius. Meteorologists say the heat is not only persistent but expanding, with the warm air mass expected to shift north-eastward by midweek.
By Friday, forecasts indicate that Germany, Italy and Czechia could also see peak daytime temperatures in the mid-30s, in some locations reaching 9–13C above the 1991–2020 climate average. The scale of the anomaly has raised concerns among forecasters, who note that even regions typically less exposed to extreme summer heat are now facing prolonged hot spells.
The United Kingdom is also expected to be affected, though less severely than mainland Europe. Forecast models suggest intermittent warm air plumes will push into southern and eastern England later in the week, lifting temperatures into the mid- to high-20s Celsius. Some modelling scenarios still point to potential spikes approaching the low-30s if conditions align.
Health and infrastructure pressures are already emerging. Transport operators across parts of western Europe and the UK are adjusting services due to risks linked to rail deformation and overheating. Authorities are also reiterating guidance on hydration, reduced outdoor activity during peak hours, and workplace adjustments for high temperatures.
In parallel, meteorologists warn that humidity levels are likely to amplify discomfort, particularly during nighttime hours, increasing the risk of so-called “tropical nights” where temperatures remain above 20C.
The broader climate context is also being highlighted by experts, who note that similar heat patterns are becoming more frequent across Europe. The current event follows a series of recent early-season heatwaves that have increasingly arrived outside traditional peak summer months, suggesting a shifting baseline for seasonal temperature extremes.
While conditions are expected to ease in some regions early next week, forecasters caution that heat buildup over continental Europe may continue to produce intermittent spikes throughout the summer period.