Interlaken Weather in May
May in Interlaken brings low temperatures around 12°C (54°F) during the day, dropping to 2°C (36°F) at night, and as part of the rainy season, heavy rainfall is common.
Rainfall in Interlaken in May
Interlaken is in the rainy season in May, with rain on around 20 days and an average of 188 mm (7.4 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Interlaken in May
May in Interlaken sees highs of 12°C (54°F) and lows of 2°C (36°F) overnight. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. Nights fall to 2°C (36°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Interlaken in May
The area enjoys a moderate level of sunlight, with around 183 hours. It's a good balance between sunny and rainy days.May in Interlaken has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Interlaken's climate page.
Interlaken Temperature in May
Min Temperature
2°C (36°F)
Max Temperature
12°C (54°F)
Chance of Rain
66%
Precipitation
188 mm (7.4 in)
Rainy days
20 days
Humidity
72%
Sunshine
183 hours
Percentage Sunshine
43%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Interlaken typically rise from around 15°C (59°F) at the start of May to approximately 19°C (66°F) by the end. Nights are cold, with lows typically ranging from 4°C (39°F) to 9°C (48°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Interlaken in May
Browse day-by-day weather records for Interlaken spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Interlaken historical weather extremes in May
Our historical data for Interlaken spans 1976 to 2026, revealing these weather extremes.
- On May 25, 2009, temperatures climbed to 32°C (90°F), marking the warmest May day on record.
- Interlaken experienced its chilliest May day on May 6, 1977, reaching only 2°C (36°F).
- The lowest overnight temperature recorded in May was -13°C (9°F) (May 7, 1977).
- The wettest May day on record brought 72 mm (2.8 in) of precipitation to Interlaken (May 28, 2007).
Best Places in Switzerland in May
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in May →
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What to Wear in Interlaken in May
The weather can swing between comfortable and chilly in May, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Interlaken in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Interlaken's climate page.
Temperature Rainfall Sunshine Humidity
See the full Interlaken climate overview or explore weather in Switzerland.
