A new heatwave is forecast to spread across large parts of Europe this week, with temperatures expected to climb well above seasonal norms, according to national weather services. No heat-related emergencies have been reported, but authorities are monitoring the situation as the continent faces another spell of intense summer heat.

Germany’s National Meteorological Service (DWD) predicts a split weather pattern, with the southwest already reaching 30°C on Monday and likely to hit 33–35°C along the Rhine by Wednesday. Italian meteorological centres warn of a vigorous subtropical anticyclone that will push temperatures to 36–38°C in the Po Valley, Tuscany, Lazio, and the major islands, accompanied by tropical nights where the mercury stays above 24–25°C. In Sweden, the SMHI forecasts a return to temperatures around 25°C from midweek after early rain clears, though this is less extreme than the 30°C heatwave that struck the west coast two weeks ago.

The duration and reach of the heatwave remain uncertain. German forecasters note a divergence between the European ECMWF model, which suggests a prolonged return of high summer, and the more cautious American model. Italian projections indicate that an Atlantic disturbance could bring a slight cooling of 2–3°C to northern regions next weekend, but the heat may intensify again the following week, particularly in the centre and south. Swedish meteorologists caution that it is too early to confirm whether the high pressure will persist beyond early next week. The traditional Siebenschläfer period in Germany, which runs until 10 July and is often seen as a bellwether for the rest of summer, has yet to offer a clear signal.

The heatwave builds on a pattern of persistent warmth that has gripped southern Europe since late May. In Italy, the prolonged absence of air mass changes has progressively heated the ground and urban centres, amplifying humidity and discomfort. The zero-degree isotherm is forecast to rise above 4,000 metres in the Alps, placing glaciers under severe stress, according to Italian meteorologists. Across the affected regions, afternoon thunderstorms may bring brief local relief, especially over the Alps and Apennines, but are not expected to break the heat.

As of Monday, the heat is building gradually. Northern and eastern Germany remain cooler at 19–23°C, while Italy is experiencing stable, sunny conditions with isolated inland showers. Sweden is seeing rain early in the week before a warm-up. Forecasts are being updated, and the public is advised to prepare for high temperatures.