Germany Summer 2025: Travel Disruptions and Air Conditioner Shortage

Introduction

Summer has officially arrived in Germany. As the final federal states release students for the summer holidays, the country is entering its most hectic travel season of the year. For expats, this period brings a familiar mix of challenges: crowded motorways, packed airports, and — increasingly — the struggle to stay cool in homes that were never designed for intense heat. This year, that last problem has become particularly acute, with air conditioners selling out at retailers across the country. Whether you are planning a road trip, flying home to visit family, or simply trying to survive the heat in a top-floor apartment, here is what you need to know.

Travel Disruptions: Roads and Airports

When all sixteen German federal states align their school holiday calendars — which happens gradually over several weeks — the result is predictable: Germany's motorways become some of the most congested in Europe. Key routes to Austria, Italy, Croatia, and the Netherlands are typically worst affected. Expect significant delays on Friday afternoons and Saturday mornings throughout July and into August.

At major airports including Frankfurt, Munich, and Berlin Brandenburg, passenger volumes spike sharply. Security queues lengthen, and flight delays become more common. If you are travelling internationally, arriving at the airport earlier than usual — at least three hours before departure for long-haul flights — is strongly advisable. Booking trains or flights for mid-week departures can also reduce stress considerably.

Deutsche Bahn long-distance services are also busier than usual during this period, though ongoing infrastructure works in 2025 mean some routes face additional delays. Check the DB Navigator app regularly for real-time updates before you travel.

The Air Conditioner Shortage

Germany is not historically an air-conditioned country. The vast majority of residential buildings — particularly older ones — have no cooling infrastructure whatsoever. For years, mild summers made this manageable. But with increasingly frequent heatwaves, demand for portable and fixed air conditioning units has surged dramatically.

This summer, many retailers are reporting sold-out stock on popular portable units. If you still need to purchase one, act quickly: check large electronics retailers like MediaMarkt, Saturn, and online platforms. Alternatively, consider other heat management strategies:

• Ventilate strategically: Open windows during the cooler night hours and early morning; close shutters and blinds during the hottest part of the day (roughly 12:00–17:00).
• Use fans with ice: A bowl of ice placed in front of a fan provides a low-cost cooling effect.
• Identify cool public spaces: Libraries, shopping centres, and some U-Bahn stations offer relief during peak heat hours.

For expats living in rented apartments, it is worth knowing that you are generally permitted to use portable (free-standing) air conditioning units without landlord approval, as they do not require permanent installation. However, fixed split systems typically require landlord consent.

Frequently Asked Questions

Can I install an air conditioner in my rented apartment in Germany?

Portable, free-standing air conditioning units that do not require wall modifications can generally be used without asking your landlord. However, installing a permanent split-system unit — which involves drilling through the exterior wall — typically requires written permission from your landlord (Vermieter). Always check your rental contract (Mietvertrag) for specific clauses on modifications.

What are the best times to travel to avoid holiday traffic?

The worst congestion occurs on Friday afternoons and Saturday mornings during peak holiday weeks. Travelling on Tuesday, Wednesday, or Thursday — or very early on Saturday before 07:00 — significantly reduces the chance of being stuck in a Stau (traffic jam). Real-time traffic data is available through Google Maps, the ADAC app, and the Bayerischer Rundfunk traffic service.

Conclusion and Next Steps

Summer in Germany is a season of movement and heat — and 2025 is no exception. Plan your travel dates carefully, build in extra time at airports and train stations, and address your home cooling situation sooner rather than later. Stock tends to replenish slowly during peak heatwave periods. Keep an eye on local weather forecasts via Deutscher Wetterdienst (DWD) at dwd.de for official heat warnings.

Source: The Local Germany