What is the weather like in Copenhagen in September?

Expect temperatures between 12°C and 17°C with 19% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Copenhagen in September?

Copenhagen in September scores 66/100 based on 30 years of climate data. Very good conditions overall.

Who should visit Copenhagen in September?

September in Copenhagen is ideal for: Outdoor enthusiasts, Cultural tourists, Honeymoon couples, Business travelers.

Copenhagen Weather in September | 30-Year Forecast

Avg High

17°C

Hottest around day 5

Avg Low

12°C

Coolest around day 30

Rainy Days

9days

19% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Øresund Strait(Øresund)

17.7°C

Monthly Average

Water Feel

💧Refreshing

Consider a wetsuit for extended swimming

Swim Rating

🏄Cool, wetsuits recommended

Based on average sea surface temperature

Body of Water

Øresund Strait

Øresund

Copenhagen coastline

Essential Travel Info for Copenhagen

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

DKK

kr Danish krone

Language

Danish

Driving

Right side

Connect

Libraries offer free internet access for...

Safety

Very High Safety

GPI: 1.296

Travel Intelligence

Exclusive flight analytics & health data for Copenhagen

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Well Connected

68/ 100

Traffic Index

Popular destination

Peak Daily Arrivals

slots per day

Peak

May

Low

Nov

Monthly Traffic Distribution

292

Jan

327

Feb

325

Mar

409

Apr

427

May

403

Jun

373

Jul

393

Aug

268

Sep

381

Oct

265

Nov

356

Dec

Traffic Level

Low Season

Key Connections

Oslo Gardermoen (OSL)

Stockholm -Arlanda (ARN)

Aalborg (AAL)

Amsterdam Schiphol (AMS)

London Heathrow (LHR)

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 Denmark. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Denmark.

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 Denmark.If rabies exposures occur while in Denmark, rabies vaccines are typically available throughout most of the country.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 Copenhagen?

👍Very good conditions overall(66/100)

Short Answer

Copenhagen shines in September with 17°C pleasant temperatures and minimal 19% rain chance. Expect 8.4 hours of sunshine daily - pack light layers for evenings.

Decision Factors

Vaccinations required

Yellow Fever

Health precautions needed

Be aware of: Leptospirosis, Hantavirus, Parvovirus B19

Plenty of sunshine

8.4h of sunshine daily

Calm, family-friendly seas

0.47m wave height - Fun Waves

Shoulder season - balanced conditions

63% of peak - good value with moderate crowds

Exceptional dining scene

69 Michelin-listed restaurants

Good For

🥾
Outdoor enthusiasts
Ideal hiking conditions: 17.2°C, 19% rain chance
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 92/100 with romantic weather conditions
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

🏖️
Beach lovers
Sea temperature only 17.7°C - too cold for comfortable swimming
👴
Elderly travelers
78% humidity creates difficult conditions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Copenhagen in September averages 17°C with 19% precipitation probability."

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

Frequently Asked Questions: Copenhagen in September

What are the temperatures in Copenhagen in September?

Daytime highs average 17°C, nights drop to 12°C. Temperatures remain fairly consistent.

How many rainy days in Copenhagen in September?

Expect around 9 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Copenhagen in September?

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

Is September peak season in Copenhagen?

This is shoulder season—moderate prices and manageable crowds.

Copenhagen Weather in September