Germany Heatwave 2026: Temperatures, Warnings and Safety

Last updated: Jul 29, 2026

Germany is not a country most travellers associate with dangerous heat. That picture is changing fast.

In late June 2026, Germany set a new all-time national temperature record, motorways buckled, and Deutsche Bahn urged passengers to postpone non-essential journeys. If you are planning a trip and want to book flights to Germany or line up hotels in Germany, this guide explains how hot German summers now get, how the country warns people, and how to stay comfortable and safe.

Germany’s national heat record and how it was broken
How the Deutscher Wetterdienst (DWD) issues heat warnings
What has happened with the heat since the record, including the third heatwave now underway
How extreme heat disrupts travel, plus city-by-city context for Berlin, Munich, Frankfurt and Cologne
Why so few German buildings have air conditioning, and practical tips to stay cool

As of 29 July 2026, Germany is in its third heatwave of the summer, with DWD heat warnings active for western and southern Germany and a peak of around 39C to 40C forecast for Thursday 30 July. The guidance below applies to any of these episodes, not only the one that broke the national record in June.

For the wider regional picture, see our Europe heatwave overview.

How hot German summers get, and the clear warming trend

German summers were historically mild, but that baseline has shifted with a clear, measurable warming trend. July highs in most cities historically sat in the mid-20s Celsius.

According to DWD data reported by The Local, Germany’s average temperature has risen by around 1.6C since 1881, and summers in recent decades have run roughly 2C hotter than they did in the 1970s and 1980s.

The clearest signal is the rise in “hot days” (Hitzetage), which Germany counts whenever the temperature passes 30C. The annual average has roughly tripled since the 1950s:

1950s average: about three hot days a year
Recent-decade average: around nine hot days a year
2019 and 2022: roughly 17 hot days each
2018: about 20 hot days

Recent years including 2018, 2020, 2022, 2023, 2024 and now 2026 all rank among the hottest on record. Germany officially defines a heatwave as at least three consecutive days above 28C, and both the frequency and the intensity of these Hitzewellen have increased.

For a deeper look at how long recent episodes have run, see our guide on how long the Europe heatwave lasts.

Germany’s national heat record, and how it was broken in 2026

Germany’s all-time heat record fell three times in a row during the late-June 2026 heatwave, and the DWD has since confirmed the new national high at 41.8C. DWD’s completed quality-control review found new all-time or monthly records at 467 of the country’s 488 weather stations, including 54 stations that reached 40C or higher.

For years, Germany’s recognised all-time high was 41.2C, measured on 25 July 2019 at Duisburg-Baerl and Tönisvorst in North Rhine-Westphalia. A higher reading of 42.6C was reported at Lingen on the same day, but the DWD invalidated it in December 2020 over concerns about the station’s siting, since its sensor was too close to trees and sheltered ground, which inflated the reading.

That old record was overtaken on three consecutive days in late June 2026, as DWD’s initial readings were revised through further quality checks:

Friday 26 June: 41.3C at Saarbrücken-Burbach in the south-west, edging past the old mark.
Saturday 27 June: 41.8C at Möckern-Drewitz in Saxony-Anhalt — Germany’s confirmed all-time high, revised up from an initial 41.5C reading after DWD found a short data-transmission gap.
Sunday 28 June: 41.7C at Neißemünde-Coschen in Brandenburg, the second-highest value on record and briefly the reported national high before the Möckern-Drewitz revision.

This closed out a heat-warning period of around 11 to 12 days, one of the longest since DWD’s heat-warning system began in 2005 and the earliest in the year such a long spell has ever been recorded. The nights were extreme too: the DWD said the night into Sunday 28 June was the warmest ever recorded in Germany, with the temperature at Kubschütz in Saxony never dropping below 29.4C, beating the previous warmest-night record of 27.2C set at Weinbiet in August 2003.

Heat since the record: two more heatwaves, with a third underway right now

Germany is back under DWD heat warnings as of 29 July 2026, in the country’s third heatwave of the summer, with highs of around 39C to 40C forecast for Thursday 30 July in the south-west. Two calmer spells separated this from the June record: a quick cool-down in early July, then a second, drier heatwave in mid-July.

Late-June heatwave (record-breaking): peak of 41.8C, high humidity, extreme heat-stress warnings across nearly all of Germany.
Mid-July heatwave: highs of 37C to 39C, notably drier air, warnings limited to a smaller area.
Late-July heatwave (current): DWD warnings for western Germany and parts of Bavaria, with highs of 39C to 40C forecast around Franconia and the Upper Rhine on Thursday 30 July, easing to roughly 36C to 37C by Friday with scattered thunderstorms.

National average temperatures fell back below the threshold the Robert Koch Institut (RKI) links to a rise in heat deaths for about a week in early July, with calendar week 27 (29 June to 5 July) averaging just 19.6C nationwide. That calm did not last: warnings returned by mid-July, and forecasters now expect further hot spells into August as this third episode plays out.

DWD heat warnings (Hitzewarnung) explained

The Deutscher Wetterdienst runs Germany’s official heat-warning system using a “felt temperature” (gefühlte Temperatur) rather than the raw thermometer reading, since that factors in humidity, sun and wind through its Klima-Michel model and better reflects the strain on the human body. The DWD issues a heat warning when strong heat stress is expected on at least two consecutive days and homes can no longer cool down enough overnight.

There are two levels:

Strong heat stress

Issued when the felt temperature in the early afternoon reaches about 32C.

Extreme heat stress

Issued when the felt temperature exceeds about 38C. During the late-June 2026 peak, the DWD placed nearly all of Germany under extreme heat warnings, while the drier mid-July episode triggered warnings across a smaller area because lower humidity kept the felt temperature down.

Warnings are typically published by 10:00 each morning and are available free on the DWD website and warning app. Heatwaves usually arrive with subtropical air and clear skies, so UV levels run high as well, and the DWD reports the expected UV load alongside its heat warnings.

How heat disrupts travel in Germany

Extreme heat hits German transport harder than many visitors expect, because much of the network was built for a cooler climate.

Autobahn buckling and Blow-ups

Older concrete motorway sections can crack and heave in extreme heat, a phenomenon known in Germany as a “Blow-up.” Concrete expands as it heats, and on older or heavily repaired slabs it has nowhere to go, so the surface can burst upward.

During the 2026 heatwave, sections of the A2 motorway near Ziesar and Burg, between Berlin and western Germany, buckled and had to be closed. Some Autobahn stretches also carry temporary heat-related speed limits to reduce the risk.

Rail disruption

Extreme heat strains tracks, signals and overhead lines. During the peak, Deutsche Bahn advised against all non-essential long-distance and regional travel and let customers rebook long-distance tickets free of charge.

If you are travelling by train in a hot spell, build in buffer time and check for delays before you set out.

Flights

Extreme heat can occasionally affect flight operations, since hot, thin air reduces aircraft performance and can trigger weight or scheduling adjustments. Germany’s main hubs kept running through the 2026 heatwaves, but delays are always possible in extreme conditions.

If you are flying, check your flight status directly with your airline or airport. Germany’s flag carrier is Lufthansa, and you can compare fares on flights to Frankfurt, its largest hub.

Berlin, Munich, Frankfurt and Cologne in the heat

Heat feels different across Germany, since dense city centres trap warmth through the night via the urban heat-island effect, so the big cities often stay uncomfortable long after sunset.

Berlin

The capital sits on sandy, low-lying terrain in the east, the region that saw the highest 2026 readings. City parks such as the Tiergarten and the lakes around the outskirts offer relief, and locals head to the water when it is hot.

Book hotels in Berlin with cooling in mind, and compare flights to Berlin.

Munich

Bavaria’s capital is warm in summer but benefits from its proximity to the Alps, which can bring cooler evening air and sudden thunderstorms.

During the 2026 peak, water use in Munich ran around 20 percent above a normal June day and residents were asked to save water. See hotels in Munich and flights to Munich.

Frankfurt

Frankfurt sits in the Rhine-Main basin, one of Germany’s warmest and most humid corners, so heat here can feel heavy. As a major finance and transport hub, its office towers are largely air-conditioned even though homes often are not.

Browse hotels in Frankfurt.

Cologne

Cologne, on the Rhine in the west, sits in the same broad region that recorded Germany’s old 41.2C record in 2019. The river and its promenades draw crowds on hot days, and the city is an easy add-on to a Frankfurt or Düsseldorf trip.

Why German homes and hotels often lack air conditioning

Only around 3 percent of German homes have air conditioning, and many mid-range and budget hotels have none either. Several reasons explain this:

Germany’s climate was cool for generations, so buildings were designed to hold heat in winter, not shed it in summer.
Thick walls, shutters and good insulation kept interiors comfortable without machines, and many Germans grew up without AC.
Energy is relatively expensive, and there is broad public concern about the climate cost of running air conditioning widely.

Office buildings are a different story: more than half of German offices are air-conditioned. For travellers, the practical takeaway is simple: in a hot spell, air conditioning in a hotel is a genuine luxury worth paying for.

Our explainer on air conditioning in Europe has more on what to expect.

How to stay safe and cool in a German heatwave

German health authorities and the DWD share clear guidance for hot spells. The core advice:

Drink two to three litres of water a day, more if you are active, and do not wait until you feel thirsty.
Avoid direct sun during the hottest hours, roughly 11:00 to 17:00, and reschedule sightseeing for early morning or evening.
Wear a hat, light clothing and high-factor sunscreen when outdoors, since heatwave days bring strong UV.
Keep rooms cool: close blinds and windows during the day, then open up at night once the air outside is cooler.
Check on elderly travelling companions, young children and anyone with a health condition, who are most at risk.
Know the warning signs of heat exhaustion (dizziness, headache, nausea, heavy sweating) and move to a cool place and hydrate immediately.

The human cost of German heat is real and immediate. The RKI’s heat-mortality model now attributes around 7,900 heat-related deaths nationwide to the 2026 heat season through calendar week 28 (6 to 12 July), up from about 5,100 tied to the late-June record spell alone, with people 75 and older accounting for the large majority of that toll.

Germany’s federal statistics office estimated excess mortality at roughly 6,800 cases in the single hardest-hit week in late June, and the RKI has continued its weekly reporting as further heatwaves have followed. The World Health Organization has linked roughly 200,000 deaths across Europe to heat over the past four years and calls extreme heat a health emergency, so take warnings seriously.

Booking tips for a summer trip to Germany

A little planning makes a hot-weather trip far more comfortable.

Filter hotels for air conditioning. Because it is far from standard, confirm AC in the room (not only the lobby) before you book — start with hotels in Germany and compare options across Berlin, Munich and Frankfurt.
Time your flights and compare fares. Shoulder-season trips in late May or September often mean gentler weather and better value — compare flights to Germany, and for city-specific deals look at Berlin, Munich and Frankfurt.

Build in flexibility

If a heatwave is forecast, favour refundable rates and flexible train tickets so you can adjust. For the broader travel impact of European heat, read our piece on the Europe heatwave travel impact.

Frequently Asked Questions

What is the hottest temperature ever recorded in Germany?

41.8C, confirmed at Möckern-Drewitz in Saxony-Anhalt on 27 June 2026 after DWD’s quality-control review revised the initial 41.5C reading upward. That beat the previous record of 41.2C at Duisburg-Baerl and Tönisvorst from 25 July 2019.

When is heatwave season in Germany?

Heatwaves are most likely from late June through August, with July typically the hottest month, and short, intense episodes can arrive with little warning. Germany saw exactly that pattern in 2026, with a record-breaking spell in late June, a second, drier heatwave in mid-July, and a third heatwave building in late July.

Do hotels in Germany have air conditioning?

Not always. Only about 3 percent of German homes have AC, and many budget and mid-range hotels lack it. Higher-end and international-brand hotels are more likely to offer it, so always confirm before booking.

Is it safe to travel to Germany during a heatwave?

Yes, with sensible precautions. Follow DWD warnings, stay hydrated, avoid the midday sun, and expect possible transport delays, and vulnerable travellers should take extra care.

Is Germany in a heatwave right now, in late July 2026?

Yes — as of 29 July 2026, DWD has issued heat warnings for western Germany and parts of Bavaria as a third heatwave builds, with highs of 39C to 40C forecast for Thursday 30 July around Franconia and the Upper Rhine. Conditions should ease somewhat by Friday with scattered thunderstorms, but check the DWD warning map before you travel.

Sources

Disclaimer: Wego strives to ensure all information presented in this article is accurate and up to date at the time of publication. Travel policies, prices, visa requirements, and conditions can change rapidly. We strongly recommend verifying critical details with official sources before making travel decisions. Wego does not accept liability for any inaccuracies, oversights, or changes that may occur after publication.