Northern Ireland weather
Our guide to the weather in Northern Ireland during May
We've looked at the most up-to-date weather data for Northern Ireland, 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 Northern Ireland weather in May.
What's the temperature like in Northern Ireland during May?
The temperature reaches around 13℃ during the daytime in May, falling away to 4℃ 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 Northern Ireland during May?
On average, there will be 7 rainy days during the month, amounting to 79.7mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Northern Ireland 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.
Weather in Northern Ireland
Our month-by-month guide to the weather and climate in Northern Ireland
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