Interlaken - When to Visit

When to Visit Interlaken

Climate guide & best times to travel

Monthly Climate Data for Interlaken Average temperature and rainfall by month Climate Overview -7°C 2°C 11°C 20°C 29°C Rainfall (mm) 0 72 144 Jan Jan: 3.0°C high, -2.0°C low, 71mm rain Feb Feb: 5.0°C high, -2.0°C low, 66mm rain Mar Mar: 10.0°C high, 0.0°C low, 74mm rain Apr Apr: 14.0°C high, 4.0°C low, 81mm rain May May: 18.0°C high, 8.0°C low, 122mm rain Jun Jun: 22.0°C high, 12.0°C low, 127mm rain Jul Jul: 24.0°C high, 13.0°C low, 145mm rain Aug Aug: 23.0°C high, 13.0°C low, 145mm rain Sep Sep: 19.0°C high, 10.0°C low, 94mm rain Oct Oct: 14.0°C high, 6.0°C low, 79mm rain Nov Nov: 7.0°C high, 1.0°C low, 79mm rain Dec Dec: 3.0°C high, -1.0°C low, 91mm rain Temperature Rainfall
Interlaken sits in the heart of the Swiss Alps, nestled between Lake Thun and Lake Brienz, which gives it a distinctive alpine climate that's actually a bit milder than you might expect for a mountain town. The weather here follows a pretty classic four-season pattern, though it's worth noting that precipitation is fairly consistent year-round—there's no real dry season to speak of. Summer (June through August) brings the warmest temperatures, hovering in the low to mid-70s°F, while winters are cold enough for proper snow, typically staying below freezing at night from December through February. What's interesting about Interlaken's climate is that rainfall actually peaks during the summer months, with July and August seeing the most precipitation. This is partly due to afternoon thunderstorms that roll through the mountains—dramatic to watch, but they can interrupt outdoor plans. Spring arrives gradually, with temperatures climbing steadily from March through May, while autumn tends to be relatively stable and pleasant, especially in September. The shoulder seasons (late spring and early fall) often offer the best balance of decent weather and fewer crowds, though you'll want to pack layers regardless of when you visit since mountain weather can be unpredictable.

Best Time to Visit

Beach & Relaxation
June through early September for lakeside relaxation, when temperatures reach the upper 60s to mid-70s°F and the lakes are warmest for swimming, though you'll want to book ahead as this is peak season.
Cultural Exploration
May, September, or October offer comfortable temperatures (mid-50s to mid-60s°F) for exploring towns and museums without the summer crowds, plus you'll find better accommodation rates.
Adventure & Hiking
Late June through September is ideal once the high-altitude trails are snow-free and mountain lifts are fully operational, with July and August offering the most reliable weather despite occasional afternoon storms.
Budget Travel
November through March (excluding Christmas/New Year) brings the lowest prices and smallest crowds, though you'll trade sunny hiking for winter sports or cozy indoor exploration in the villages.

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What to Pack

Year-Round Essentials

Layering pieces
Mountain weather changes rapidly, and you'll often experience multiple seasons in a single day, especially at different elevations.
Waterproof rain jacket
Rain is consistent year-round in Interlaken, and afternoon storms are common in summer, so a good shell is essential.
Comfortable walking shoes
You'll be doing a fair amount of walking whether exploring towns or hitting easier trails, and cobblestone streets can be tough on flimsy shoes.
Sunglasses and sunscreen
Alpine sun is intense year-round due to elevation and reflection off snow or water, making sun protection crucial even on cooler days.
Reusable water bottle
Swiss tap water is excellent and drinking fountains are everywhere, so there's no need to buy bottled water.
Day backpack
Essential for carrying layers, snacks, and water during day trips to the mountains or around the lakes.
Power bank
You'll be taking lots of photos and using maps frequently, and outlets aren't always convenient on mountain excursions.

Spring (Mar-May)

Clothing
Medium-weight jacket, Long-sleeve shirts, Jeans or hiking pants, Light sweater or fleece
Footwear
Waterproof hiking boots or trail shoes with good traction for muddy paths
Accessories
Warm hat for cooler mornings, Light gloves, Umbrella or rain hat
Layering Tip
Think three-layer system—base, insulating mid-layer, and waterproof outer—since mornings can be chilly while afternoons warm up considerably.

Summer (Jun-Aug)

Clothing
Light t-shirts and shorts, Long pants for hiking, Light rain jacket, One warm layer for evenings or mountain tops
Footwear
Sturdy hiking boots for mountain trails or comfortable walking shoes for town exploration
Accessories
Sun hat with brim, Sunglasses, Lightweight scarf for breezy boat rides
Layering Tip
Dress in light layers you can shed as the day warms up, but always pack a fleece or light jacket for higher elevations where it's noticeably cooler.

Autumn (Sep-Nov)

Clothing
Medium-weight jacket, Long-sleeve shirts and sweaters, Jeans or casual pants, Warm fleece or vest
Footwear
Waterproof boots or shoes with good grip for wet leaves and occasional early snow
Accessories
Warm hat and gloves for later autumn, Scarf, Compact umbrella
Layering Tip
Similar to spring but trend warmer as November approaches—you'll want increasingly substantial layers as the season progresses toward winter.

Winter (Dec-Feb)

Clothing
Heavy winter coat, Thermal base layers, Warm sweaters, Insulated pants or jeans with long underwear
Footwear
Insulated, waterproof winter boots with good traction for snow and ice
Accessories
Warm winter hat, Insulated gloves or mittens, Scarf or neck warmer, Ski goggles if hitting the slopes
Layering Tip
Go for serious cold-weather layering with thermal base, insulating mid-layers, and a windproof outer shell—mountain temperatures drop significantly below valley temps.
Plug Type
Type C and Type J (Swiss three-pin)
Voltage
230V, 50Hz
Adapter Note
Most travelers will need an adapter; Type C (European two-pin) works in most outlets, but Switzerland's Type J has a unique three-pin configuration for some outlets.

Skip These Items

Beach towels (hotels provide them, and they're bulky) Excessive toiletries (Swiss drugstores are well-stocked and everywhere) Heavy guidebooks (download digital versions or use your phone) Too many dressy outfits (Interlaken is casual and outdoors-focused) Snacks from home (Swiss supermarkets like Coop and Migros have everything you need)

Month-by-Month Guide

January

January is proper winter in Interlaken, with temperatures hovering just above freezing during the day and dipping below at night. The town transforms into a winter sports hub, with excellent skiing conditions in the surrounding mountains. You'll find snow-covered landscapes and that crisp alpine air, though it's worth noting that some higher mountain passes and attractions might have limited hours.

3°C (37°F) High
-3°C (26°F) Low
71mm (2.8in) Rainfall
Medium Crowds
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February

February continues the winter pattern with cold temperatures and decent snow coverage, making it another solid month for skiing and snowboarding. Days are gradually getting longer, which is nice for maximizing mountain time. It's typically one of the drier winter months, though you'll still want to be prepared for snow and cold winds coming down from the peaks.

5°C (41°F) High
-3°C (27°F) Low
66mm (2.6in) Rainfall
Medium Crowds
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March

March marks the transition from winter to spring, with temperatures slowly climbing into the 50s°F during the day. You'll likely see a mix of weather—some snowy days, some sunny ones—as the season shifts. Lower elevation trails might start becoming accessible, though higher altitudes remain firmly in winter mode. It's actually a decent time to visit if you don't mind variable conditions and want to avoid peak season prices.

10°C (50°F) High
1°C (33°F) Low
74mm (2.9in) Rainfall
Low Crowds
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April

Spring is properly underway in April, with temperatures reaching into the upper 50s°F and the valley starting to green up nicely. That said, the mountains still hold plenty of snow at higher elevations, and you'll want layers since mornings can be quite chilly. This is shoulder season, so you'll find good deals and fewer tourists, though some mountain facilities might still be in their off-season closure period.

14°C (58°F) High
4°C (39°F) Low
81mm (3.2in) Rainfall
Low Crowds
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May

May is when Interlaken really starts to shine for outdoor activities, with temperatures climbing into the mid-60s°F and wildflowers beginning to bloom in the meadows. More hiking trails become accessible as snowmelt progresses, though high-altitude routes might still be snow-covered. Rainfall picks up noticeably this month, so you'll want a good rain jacket, but the longer days and spring scenery make it worth the occasional shower.

18°C (65°F) High
8°C (46°F) Low
122mm (4.8in) Rainfall
Medium Crowds
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June

June brings proper summer weather with temperatures in the low 70s°F and most high-altitude trails finally clear of snow. The landscape is lush and green, waterfalls are running strong from snowmelt, and the days are long—perfect for maximizing your outdoor time. Crowds start building as summer vacation season begins, and you'll notice that rainfall continues to be fairly substantial, often in the form of afternoon thunderstorms.

22°C (72°F) High
12°C (53°F) Low
127mm (5.0in) Rainfall
High Crowds
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July

July is peak summer and peak tourist season, with the warmest temperatures of the year hovering around 75°F and all mountain facilities operating at full capacity. The weather is generally excellent for hiking, paragliding, and lake activities, though this is also the wettest month with frequent afternoon thunderstorms rolling through—they're usually brief but can be intense. Book accommodations well in advance as the town fills up with visitors from around the world.

24°C (75°F) High
13°C (56°F) Low
145mm (5.7in) Rainfall
High Crowds
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August

August mirrors July in terms of weather—warm days in the mid-70s°F and substantial rainfall, particularly in the afternoons. It remains peak season with all the crowds and higher prices that entails, though the weather is typically reliable enough for most outdoor activities. The lakes are at their warmest now if you're interested in swimming, and the alpine scenery is at its summer best with green meadows and clear (between storms) mountain views.

23°C (74°F) High
13°C (56°F) Low
145mm (5.7in) Rainfall
High Crowds
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September

September is arguably one of the best months to visit Interlaken, with comfortable temperatures in the mid-60s°F and noticeably fewer crowds as summer vacation ends. Rainfall drops off compared to the peak summer months, and you'll catch the early hints of autumn colors in the forests. Most mountain facilities remain open, and the weather tends to be more stable than in high summer, though you'll want to bring layers as evenings get cooler.

19°C (66°F) High
10°C (50°F) Low
94mm (3.7in) Rainfall
Medium Crowds
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October

October brings autumn in earnest, with temperatures cooling to the mid-50s°F and the forests turning brilliant shades of gold and orange. It's a beautiful time for lower-elevation hikes and photography, though some higher mountain facilities start closing for the season. You'll find good deals on accommodations as tourist numbers drop, and the crisp air and fall colors make for a different but equally appealing experience compared to summer.

14°C (57°F) High
6°C (42°F) Low
79mm (3.1in) Rainfall
Low Crowds
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November

November is the quiet season in Interlaken, with temperatures dropping into the 40s°F and the town settling into a slower pace before winter sports season begins. The weather can be gray and damp, and many tourist facilities operate on reduced schedules or close entirely. That said, if you're looking for rock-bottom prices and don't mind limited options, you'll have the place largely to yourself—just don't expect much in terms of outdoor activities.

8°C (46°F) High
1°C (34°F) Low
79mm (3.1in) Rainfall
Low Crowds
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December

December ushers in winter proper, with temperatures dropping below freezing at night and snow beginning to accumulate in the mountains. The town takes on a festive atmosphere with Christmas markets and holiday decorations, and ski season typically kicks off mid-month. Crowds pick up around the holidays, particularly during the Christmas and New Year period when prices spike considerably, but early December can still offer decent value.

3°C (38°F) High
-2°C (28°F) Low
91mm (3.6in) Rainfall
Medium Crowds
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