Switzerland in May: weather, activities, and tips

Switzerland in May: what to expect

May is a hidden gem in the Swiss travel calendar. The summer crowds have not yet arrived, prices are noticeably lower than July and August, and yet the country is in glorious condition. Mountain wildflowers are at their peak, the valleys are intensely green, lake water temperatures begin to warm, and most services — including summer mountain railways and cable cars that have been closed all winter — are reopening.

If you ask long-time Swiss travellers which month they prefer, May comes up regularly. It combines genuinely good weather, beautiful scenery, operational infrastructure, and manageable tourist numbers. It is as close to a perfect compromise as Switzerland offers.

May weather in Switzerland

Valley cities (Zurich, Geneva, Basel, Bern): Temperatures typically reach 17-22C by mid-May. Warm enough for outdoor dining, long walks, and lake swimming as the month progresses. Rain remains possible — May is not the driest month — but sunshine is more reliable than in April.

Interlaken and Lucerne: 15-20C, beautiful conditions. The mountain backdrop turns dramatically green, waterfall flows are at maximum from snowmelt, and the lakes gleam blue.

Mountain resorts (1,500-2,000m): 8-14C. Snow patches persist on north-facing slopes, but most terrain is transitioning to summer conditions. Alpine flower season begins in earnest at these elevations.

High alpine (above 2,500m): Still cold and snowy, typically -5 to 5C. Jungfraujoch remains a full winter environment.

Daylight in May is excellent — around 14.5-15.5 hours from sunrise to sunset, making for very full days.

What’s open in May

May sees a significant reopening of summer infrastructure. Key openings typically in May include:

Mount Pilatus cogwheel railway (May): The world’s steepest cogwheel railway reopens for the summer season, typically in the second week of May. This is the most scenic way up Mount Pilatus and a highlight for many visitors to Lucerne.

Schynige Platte railway: This historic rack railway above Interlaken reopens in May, giving access to the mountain garden and extraordinary views over the Eiger, Mönch, and Jungfrau.

Most mountain cable cars and gondolas: Lift systems that closed after ski season reopen in May for summer hiking access.

Boat services: Full summer timetables on all major lakes are in operation by May.

High mountain excursions: Jungfraujoch, Mount Titlis, and Mount Pilatus all fully operational.

Events and festivals in May

Ascension Day (40 days after Easter): A public holiday in Switzerland with widespread outdoor celebrations. Many Swiss spend the long weekend hiking or at the lake.

Whit Monday (Pentecost Monday): Another public holiday with outdoor activities and some local festivals.

Fêtes de Genève preview events (Geneva, late May): Geneva’s summer festival begins building toward its August crescendo with early events.

Swiss cycling classics: Several regional cycling events and sportives take place in May, particularly in the Ticino and Graubünden.

Alpabzug rehearsals (various): Some communities begin traditional cattle drive rehearsals. The main transhumance events are in June, but May sees activity in lower pastures.

Best activities for May

Hiking

May opens the main hiking season for elevations up to about 2,000m. Trails that were snow-covered or icy through April are now clear and spectacularly beautiful — wildflowers line the paths, streams run full with snowmelt, and the air is clear and fresh.

The Lauterbrunnen valley is extraordinary in May. The waterfalls — Staubbach, Trümmelbach, and dozens of others — run at their most dramatic volume, fed by the melting winter snowpack. The valley floor path from Lauterbrunnen to Stechelberg is one of Switzerland’s finest easy walks.

The Lavaux wine terraces above Lake Geneva offer excellent May walking — the vines are in leaf, the lake shimmers below, and the Savoy Alps across the water are still snow-capped.

Near Lucerne, the paths on Mount Rigi and Mount Pilatus open up with the cogwheel railways.

Lake swimming and water activities

By late May, the lakes begin to warm enough for swimming. Lake Geneva reaches swimmable temperatures in late May in a warm year. Lake Zurich and Lake Lugano in Ticino are slightly warmer. Outdoor pools (Freibäder) open across Switzerland, typically on 1 May by tradition.

Mountain excursions

All three of the great day-trip mountains are accessible and far less crowded than in July and August. A Jungfraujoch excursion in May might have half the visitors it gets in August.

Book Jungfraujoch — Top of Europe Book the Mount Pilatus golden round trip from Lucerne Visit Mount Titlis and the glacier

Paragliding

May is excellent for paragliding in Interlaken. The combination of rising thermals, clear air, and manageable crowds makes May a favourite month for pilots.

Book tandem paragliding over Interlaken

Cycling

Switzerland’s cycling infrastructure — dedicated paths, bike-friendly trains, and hire stations — is fully operational by May. The national cycling routes (1-9) through the valleys are superb. The Rhine cycle path, the Rhone route near Lake Geneva, and the Aare valley paths near Bern are all beautiful in May conditions.

Visiting Grindelwald First

The Grindelwald First cableway reopens in spring with its thrilling summer activities — the cliff walk along the mountain edge and the First Flyer zipline among them.

Book Grindelwald First cableway and cliff walk

May costs

May sits in pleasant middle ground — below July and August peak prices, above the true low-season rates of January to March. Expect hotel prices around 15-25% below August rates in most destinations. May is increasingly popular as travellers discover it offers excellent conditions at better value, so book ahead for popular destinations like Zermatt and Grindelwald.

The Swiss Travel Pass is excellent value in May, covering trains, boats, and many mountain transport systems.

Get your Swiss Travel Pass

Packing for May in Switzerland

May requires layers but less extreme preparation than winter months.

Clothing: Light base layers, a medium-weight fleece or jumper, and a packable waterproof jacket cover almost every May situation. A light down jacket is useful for evenings at altitude.

Footwear: Good walking shoes or trail shoes are ideal for valley and lower-elevation hiking. Proper hiking boots if you plan higher routes. Rain-proof is helpful.

Sun protection: UV strengthens significantly in May, especially at altitude. Sunscreen SPF 30+ and sunglasses essential for mountain days.

Light layers for evenings: Cities can be warm in the afternoon but cool down to 10-12C by evening.

Suggested May itinerary

Classic 7 days: 2 nights Zurich (old town, lake, museums), 1 night Lucerne (Chapel Bridge, Mount Pilatus day trip), 2 nights Interlaken (Jungfraujoch, Lauterbrunnen walk, paragliding), 2 nights Zermatt (village, Matterhorn views, hiking).

This covers Switzerland’s greatest hits in ideal conditions. See our 7-day itinerary for the detailed version.

For budget planning, our Switzerland budget guide has current prices and money-saving tips.

Pros and cons of visiting in May

Pros:

• Beautiful conditions — wildflowers, snowmelt waterfalls, green valleys
• Lower crowds than summer
• Better prices than July/August
• Most summer services open or opening
• Long daylight hours

Cons:

• Rain remains possible (April showers extend into May)
• High hiking trails (above 2,000m) may still have snow and ice
• Not yet beach/swimming season in most lakes
• Some high mountain huts closed until June

Getting around in May

The Swiss Travel Pass is excellent value in May. Most of the summer transport infrastructure is reopening, meaning you can combine trains, boats, and mountain railways efficiently. May is when boat services on Lakes Geneva, Zurich, Lucerne, Thun, and Brienz move to full summer timetables — an important part of the STP’s value proposition.

Get your Swiss Travel Pass

The Glacier Express runs daily in May and May is one of the less crowded months for this journey — seat reservations are easier to get than in July or August.

Book the Glacier Express

Food and drink in May

May marks the return of outdoor dining season. Café terraces open across Swiss cities, lakeside restaurants set out their chairs, and mountain restaurant terraces become usable as daytime temperatures warm. Swiss cities are particularly pleasant in May — the outdoor life begins without the summer crowds.

If you are in the Lucerne area, the boat-and-Pilatus Golden Round Trip combines perfectly with a lakeside lunch in May when the cogwheel has just reopened.

Book the Mount Pilatus golden round trip

May with children

May is an excellent month for family visits to Switzerland. The outdoor swimming pools (Freibäder) open on May 1 by tradition in many Swiss cities — children love the Zurich lakeside Badi. Mountain activities at Grindelwald First (cliff walk and summer toboggan) open in May, as do many other family-oriented mountain attractions.

The Jungfraujoch is less crowded than in summer and the snow at the top is a genuine delight for children who may rarely see it. The Ice Palace and outdoor snow area are child-friendly highlights.

Book Jungfraujoch for a family May trip

Waterfalls in May

May is the best month in the entire year for Switzerland’s waterfalls. The combination of snowmelt from the high mountains and spring rainfall creates maximum water volume in every fall, stream, and river. The most spectacular:

Staubbach Falls, Lauterbrunnen (297m): Drops almost vertically into the village, creating a permanent spray cloud that catches the light. At its most powerful in May.

Trümmelbach Falls, Lauterbrunnen: The only glacial waterfalls in Europe that are accessible inside the mountain via funicular. In May, the roar is deafening and the force of the water is extraordinary.

Rhine Falls, Schaffhausen: Europe’s largest waterfall by volume. May snowmelt dramatically increases the volume. Accessible as a day trip from Zurich (45 minutes).

Giessbach Falls, Lake Brienz: A spectacular series of falls accessible by historic funicular from Lake Brienz’s shore.

May versus June: which is better?

May and June are the two best shoulder season months, and the choice between them comes down to specifics:

• Crowds: May is slightly less crowded, particularly in the second half of June when some school holidays begin.
• Cost: May is marginally cheaper, particularly in the second half when June pricing begins to move toward summer.
• Hiking: June has more high-altitude trails open (above 2,000m). May is better below 1,800m.
• Waterfalls: May wins clearly — maximum snowmelt volume.
• Swimming: June edges May, with slightly warmer lake temperatures.
• Overall: May is often the better choice for value and conditions, but June is never a bad decision.

Quick tips for May visitors

Check the opening dates for specific attractions before booking — the exact opening day for cogwheel railways and summer-only cable cars varies year to year depending on snow conditions. Most operators publish opening dates in April.

If hiking is your primary activity, focus on elevations below 1,800m in early May and 2,000m by late May. Snow and ice on higher paths can be dangerous without proper equipment.

Pack genuine versatility into your clothing — May days can start cool and warm to 22C by afternoon, then turn cool again in the evening, especially near lakes or at altitude.

May is the ideal month for a first-time Switzerland visit if you want to avoid peak crowds while seeing the country in genuinely excellent condition.

Read our when to visit Switzerland guide for a full comparison of all months, our 7-day Switzerland itinerary for route planning, and our budget guide for May-specific costs. Destination guides: Interlaken | Lucerne | Grindelwald