Killarney weather

Our guide to the weather in Killarney during May

14

Average high

3

UV Index

96mm

Monthly rainfall

85%

Humidity

We've looked at the most up-to-date weather data for Killarney, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Killarney weather in May.

What's the temperature like in Killarney during May?

The temperature reaches around 14℃ during the daytime in May, falling away to 6℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Killarney during May?

On average, there will be 7 rainy days during the month, amounting to 95.6mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Killarney during May?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during May. With moderate air temperatures, any breeze will feel cool.

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Weather in Killarney

Our month-by-month guide to the weather and climate in Killarney

7.7

Killarney weather in

January
8.3

Killarney weather in

February
9.8

Killarney weather in

March
12.0

Killarney weather in

April
14.1

Killarney weather in

May
16.7

Killarney weather in

June
18.1

Killarney weather in

July
17.6

Killarney weather in

August
16.2

Killarney weather in

September
13.4

Killarney weather in

October
9.9

Killarney weather in

November
8.0

Killarney weather in

December