Switzerland Swiss Alps Weather in May — Climate Guide
May in Swiss Alps is moderate
Swiss Alps Weather in May — Quick Answer
As of 2026- Avg temp
- 18° / 7°
- Rainfall
- 110mm · 14 days
- Crowds
- Moderate
As of 2026, Swiss Alps in May averages a high of 18°C and low of 7°C with 110mm of rain over about 14 days. Pleasant valley spring (around 18°C/7°C) with more rain. T-shirts and a light jacket low down, but warm layers and a windproof for the high summits, which stay snowy and cold.
May is moderate for Swiss Alps.
May is the brightening late shoulder season. Valleys turn properly green and mild (around 18°C/7°C), wildflowers bloom on the lower meadows, and the waterfalls run at full snowmelt force.
It's a good-value window before the summer crush: prices and crowds are still moderate, and through the month more lifts, cable cars, and mountain restaurants reopen. Lower-altitude hiking becomes possible, though higher trails are still snowbound.
Travel score
Swiss Alps May Weather Stats
Avg High
18°C
Avg Low
7°C
Rainy Days
14
110mm total
Sunshine
5.5h
Daily avg
Humidity
71%
comfortable
UV Index
5
Moderate
Wind
10 km/h
Gusts 24
Crowds
Moderate
At attractions
May Sunrise & Sunset
Air Quality
PM2.5
10 μg/m³
PM10
18 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
17°C
Nighttime
6°C
Humidity and wind affect how the actual temperature feels.
Wind
10 km/h
Max gust 24 km/h
Activities Recommended for May
May Travel Pros & Cons
Pros
- Good value before summer — moderate crowds/prices
- Green meadows, wildflowers, full waterfalls
- Lower trails reopening for hiking
- Lifts and restaurants progressively reopening
Cons
- One of the wetter months
- Higher trails still snowbound; some lifts not yet open
- Cold, snowy summits
- Variable weather
May Events & Festivals
- Late shoulder season easing toward summer
- Lower lifts and restaurants begin reopening through the month
- Alpine meadows blooming with wildflowers low down
- Waterfalls at full force from snowmelt
Swiss Alps in May — Full Picture
May is the brightening late shoulder season. Valleys turn properly green and mild (around 18°C/7°C), wildflowers bloom on the lower meadows, and the waterfalls run at full snowmelt force.
It's a good-value window before the summer crush: prices and crowds are still moderate, and through the month more lifts, cable cars, and mountain restaurants reopen. Lower-altitude hiking becomes possible, though higher trails are still snowbound.
The trade-off is rain — May is one of the wetter months — and the high country is still in winter, so some upper hikes and lifts may not be ready. The summit railways (Jungfraujoch, Gornergrat) run, with Gornergrat's summer fare resuming.
Note: late May can be lovely, but check which higher lifts and trails have opened, and pack for both valley warmth and summit cold. Verify current operating dates and fares.
What to Wear & What to Pack
Pleasant valley spring (around 18°C/7°C) with more rain. T-shirts and a light jacket low down, but warm layers and a windproof for the high summits, which stay snowy and cold.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current13.3°C
3.3°C
12.3/mo
Summer (Jun·Jul·Aug)
22.7°C
11.3°C
14/mo
Autumn (Sep·Oct·Nov)
13.7°C
5°C
10.7/mo
Winter (Dec·Jan·Feb)
4°C
-2.3°C
10.7/mo
Swiss Alps Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 3° | -3° | 11d·70mm | 2h | 82% | 1 | Busy | Peak | |
| 5° | -2° | 10d·65mm | 3h | 79% | 2 | Busy | Peak | |
| 9° | 0° | 11d·75mm | 4h | 74% | 3 | Moderate | Shoulder | |
| 13° | 3° | 12d·85mm | 5h | 71% | 4 | Quiet | Low season | |
| 18° | 7° | 14d·110mm | 5.5h | 71% | 5 | Moderate | Shoulder | |
| 21° | 10° | 14d·130mm | 6h | 71% | 6 | Busy | Peak | |
| July (Best) | 24° | 12° | 14d·145mm | 6.5h | 70% | 7 | Very busy | Peak |
| August (Best) | 23° | 12° | 14d·150mm | 6h | 73% | 6 | Very busy | Peak |
| 19° | 9° | 11d·100mm | 5.5h | 75% | 5 | Busy | Shoulder | |
| 14° | 5° | 10d·80mm | 4h | 78% | 3 | Moderate | Low season | |
| 8° | 1° | 11d·80mm | 2.5h | 82% | 1 | Quiet | Low season | |
| 4° | -2° | 11d·75mm | 2h | 83% | 1 | Busy | Peak |
View Other Months
Swiss Alps May Hotel Picks
Frequently Asked Questions
Is May a good time to visit Swiss Alps?
Swiss Alps in May is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Swiss Alps in May?
Swiss Alps May averages a high of 18°C and a low of 7°C.
Does it rain much in Swiss Alps in May?
Swiss Alps May averages 110mm of rainfall over about 14 rainy days.
What should I wear in Swiss Alps in May?
Pleasant valley spring (around 18°C/7°C) with more rain. T-shirts and a light jacket low down, but warm layers and a windproof for the high summits, which stay snowy and cold.
What time are sunrise and sunset in Swiss Alps in May?
Swiss Alps May sunrise is 05:55 and sunset is 21:00, with 15h 05min of daylight.
What's the air quality like in Swiss Alps in May?
Swiss Alps May air quality (AQI) averages 30, rated Good. PM2.5 averages 10μg/m³.
What activities are recommended in Swiss Alps in May?
In May, Swiss Alps is great for Lower-altitude hiking, Waterfall and meadow walks, Lake boats (Thun, Brienz, Lucerne).
Is May peak season in Swiss Alps?
Swiss Alps May crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Swiss Alps
View Other Months
Planning a May trip to Swiss Alps?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.