What is the weather like in Killarney in September?

Expect temperatures between 11°C and 17°C with 32% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Killarney in September?

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

Who should visit Killarney in September?

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

Killarney Weather in September | 30-Year Forecast

Avg High

17°C

Hottest around day 6

Avg Low

11°C

Coolest around day 27

Rainy Days

25days

32% avg rain chance

Sunshine

8hrs/day

Autumn season

Essential Travel Info for Killarney

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

EUR

€ Euro

Language

English

+1 more

Driving

Left side

Connect

As of May 2021, Killarney has 4G from al...

Safety

Very High Safety

GPI: 1.288

Travel Intelligence

Exclusive flight analytics & health data for Killarney

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Remote

3/ 100

Traffic Index

Off the beaten path

Peak Daily Arrivals

slots per day

Peak

Jun

Low

Mar

Monthly Traffic Distribution

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Traffic Level

Low Season

Key Connections

Dublin (DUB)

London Luton (LTN)

Hahn Frankfurt- (HHN)

Manchester (MAN)

Health & Safety Advisory

CDC travel health recommendations

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

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 Ireland.If rabies exposures occur while in Ireland, 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.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Vaccine isnotrequired.Updated April 23, 2025

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Killarney?

👌Good option with minor considerations(62/100)

Short Answer

Ideal September conditions in Killarney: 17°C comfortable highs, just 32% chance of rain. The 84% humidity feels pleasant, making this prime sightseeing season.

Decision Factors

Vaccinations required

Yellow Fever

Very high humidity

84% average humidity

Health precautions needed

Be aware of: Leptospirosis, Hantavirus, Parvovirus B19

Shoulder season - balanced conditions

71% of peak - good value with moderate crowds

Good For

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

Who Should Avoid

👴
Elderly travelers
84% humidity creates difficult conditions
📸
Photographers
78% cloud cover limits natural light opportunities

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Killarney in September averages 17°C with 32% precipitation probability."

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

Frequently Asked Questions: Killarney in September

What are the temperatures in Killarney in September?

Daytime highs average 17°C, nights drop to 11°C. Temperatures remain fairly consistent.

How many rainy days in Killarney in September?

Expect around 25 days with measurable rainfall. An umbrella is advisable.

What to wear in Killarney in September?

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

Is September peak season in Killarney?

This is shoulder season—moderate prices and manageable crowds.

Killarney Weather in September

Killarney September Weather Calendar

Essential Travel Info for Killarney

Travel Intelligence

Smart Flight Estimator

Flight Connectivity Analysis

Monthly Traffic Distribution

Key Connections

Health & Safety Advisory

COVID-19

Hepatitis A

Hepatitis B

Measles

Rabies

Yellow Fever

Is September a Good Time to Visit Killarney?

Decision Factors

Good For

Who Should Avoid

Related Guides

Frequently Asked Questions: Killarney in September

What are the temperatures in Killarney in September?

How many rainy days in Killarney in September?

What to wear in Killarney in September?

Is September peak season in Killarney?