What is the weather like in Interlaken in September?

Expect temperatures between 11°C and 19°C with 35% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Interlaken in September?

Interlaken in September scores 62/100 based on 30 years of climate data. Good option with minor considerations.

Who should visit Interlaken in September?

September in Interlaken is ideal for: Cultural tourists, Business travelers.

Interlaken Weather in September | 30-Year Forecast

Avg High

19°C

Hottest around day 5

Avg Low

11°C

Coolest around day 27

Rainy Days

30days

35% avg rain chance

Sunshine

8hrs/day

Autumn season

Essential Travel Info for Interlaken

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

CHF

Fr. Swiss franc

Language

French

+3 more

Driving

Right side

Connect

As of March 2022 formobile devices, Inte...

Safety

Very High Safety

GPI: 1.357

Travel Intelligence

Exclusive flight analytics & health data for Interlaken

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Well Connected

76/ 100

Traffic Index

Popular destination

Peak Daily Arrivals

slots per day

Peak

Dec

Low

Jan

Monthly Traffic Distribution

156

Jan

240

Feb

242

Mar

210

Apr

216

May

500

Jun

482

Jul

501

Aug

519

Sep

178

Oct

441

Nov

537

Dec

Traffic Level

Low Season

Key Connections

London Heathrow (LHR)

Paris Charles de Gaulle (CDG)

Amsterdam Schiphol (AMS)

London Gatwick (LGW)

Zurich Kloten (ZRH)

Health & Safety Advisory

CDC travel health recommendations

7 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Switzerland. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Switzerland.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Switzerland.If rabies exposures occur while in Switzerland, rabies vaccines are typically not readily available.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Tick-borne Encephalitis

For travelers moving or traveling toTBE-endemic areasTBE vaccineis recommended for persons who will haveextensiveexposure to ticks based on their planned outdoor activities and itinerary.TBE vaccine may be considered for persons who might engage in outdoor activities in areas ticks are likely to be found.

+1 more

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Interlaken?

👌Good option with minor considerations(62/100)

Short Answer

Popular September in Interlaken offers 19°C and 35% rain chance - excellent conditions that attract maximum visitors. Book 3-6 months ahead for best rates.

Decision Factors

Vaccinations required

Yellow Fever

Very high humidity

83% average humidity

Peak tourist season

97% of annual peak - expect crowds and peak prices

Health precautions needed

Be aware of: Leptospirosis, Hantavirus, Tuberculosis (TB)

Plenty of sunshine

9h of sunshine daily

Exceptional dining scene

19 Michelin-listed restaurants

Good For

🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

💰
Budget travelers
Peak season means premium prices everywhere
👴
Elderly travelers
83% humidity creates difficult conditions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Interlaken in September averages 19°C with 35% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Interlaken in September

What are the temperatures in Interlaken in September?

Daytime highs average 19°C, nights drop to 11°C. Temperatures remain fairly consistent.

How many rainy days in Interlaken in September?

Expect around 30 days with measurable rainfall. An umbrella is advisable.

What to wear in Interlaken in September?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is September peak season in Interlaken?

This is shoulder season—moderate prices and manageable crowds.

Interlaken Weather in September

Interlaken September Weather Calendar