Weather in Ireland in May: A Guide to Climate, Temperature, and What to Wear

Updated On: April 23, 2024 by   Aya Radwan

James glanced at Maddie briefly as he navigated the narrow road, driving away from the Cliffs of Moher. Raindrops began to hit the windshield. “You know what they say about the weather in Ireland?” Maddie smiled, and he continued, “All you have to do is wait five minutes.”

Are you planning a getaway to Ireland in May and scratching your head about what on earth to pack? You’re not the only one, as Ireland’s famously unpredictable weather can leave even the most seasoned travellers in a muddle.

While we half-heartedly believe what James mentioned in the magical rom-com Irish Wish, Maddie attributed the words to Mark Twain. We believe May is one of the more forgiving months in Irish weather. Average daily temperatures hover around a reasonably comfortable 15°C.

So, here’s your trusty guide—pulling together tips on the weather in Ireland in May and how to dress for such an occasion. It features everything from nifty layering ideas to suggestions for comfy walking shoes. Ready for our charming Irish adventure, then? Let’s dive right in!

General Overview of the Weather in Ireland

Irish weather is temperate and oceanic, boasting mild temperatures year-round and frequent rainfall. The Atlantic Ocean’s influence results in a lack of extremes, making the island a comfortable destination throughout the year. Before we dive into the weather in Ireland in May in detail, here’s a breakdown of what to expect of Irish weather across the seasons.

Spring (March-May)

Spring brings a welcome change from winter, with average highs climbing from 9°C (48°F) in March to 15°C (59°F) in May. Lows hover around 4°C (39°F) to 8°C (46°F). Rainfall remains consistent throughout the season, averaging around 10-15% monthly. While snow is uncommon, occasional flurries might occur in higher elevations during early spring. Tourist crowds begin to pick up in May, especially during bank holidays.

Summer (June-August)

Summer offers the warmest weather in Ireland, with average highs ranging from 17°C (63°F) in June to 20°C (68°F) in July and August. Lows typically settle between 10°C (50°F) and 12°C (54°F). Rainfall persists but at slightly lower percentages (8-12% monthly average). The possibility of snow is virtually nonexistent. This period experiences the highest tourist influx, particularly during July and August when many festivals and outdoor events occur.

Autumn (September-November)

Autumn brings a gradual shift towards cooler temperatures. Highs start at a pleasant 17°C (63°F) in September and gradually decrease to 9°C (48°F) by November. Lows mirror this trend, dropping from 10°C (50°F) to 4°C (39°F). Rainfall increases slightly, averaging 12-15% per month. The tourist season winds down after September, offering a more tranquil travel experience.

Winter (December-February)

Winter is the coldest season in Ireland, but it remains relatively mild compared to other European destinations. Average highs range from 7°C (45°F) in December to 8°C (46°F) in February. Lows typically fall between 2°C (36°F) and 4°C (39°F). Rainfall remains consistent throughout winter, averaging 12-15% per month. Although snow isn’t frequent, it can occasionally occur, especially in mountainous areas. Tourist numbers are at their lowest during winter, offering a chance to experience a quieter side of Ireland, which we explored in one of our detailed guides.

It’s essential to remember that the weather in Ireland can be quite changeable, even within the same day. So, packing layers and checking the forecast before your trip is crucial for a comfortable and enjoyable experience.

Climate and Temperature in Ireland in May

Temperatures begin to increase in Ireland in May. The days become slightly longer, providing more sunshine and opportunities to stay out. Generally, the climate in Ireland is mild and pleasant, with average highs of 15°C/59°F and lows of 9°C/48°F. However, the weather is often overcast or mostly cloudy throughout the month. Rain isn’t completely out of the picture; it never is, which means a suitable waterproof jacket is handy.

Mild and Pleasant Weather

May in Ireland brings mild and nice weather. It is warmer than April but cooler than June, with the daily high temperatures reaching up to 59°F (15°C). Long days are filled with light, making it a great time to see the country. But remember, the Irish Sea can still be a bit cold, averaging around 49-52°F (about 9-11°C). So, even though it’s not freezing, you might want to wait before taking a dip!

We recommend spending more time visiting museums, theatres, and local pubs and exploring the local legends. You can venture out to the Cliffs of Moher or on an adventurous road trip along the Wild Atlantic Way, but we urge you to exercise caution and check the forecast before leaving the hotel. We reckon it’s still early for water activities as the waves remain high.

Average highs of 15°C/59°F and lows of 9°C/48°F

In May, the weather in Ireland is generally mild and pleasant. The average high temperature is around 15°C (59°F), while the lows can drop to about 9°C (48°F). Pack layers of clothing to adjust to changing temperatures throughout the day. Don’t forget your waterproof outerwear, as overcast or mostly cloudy days are common in May.

Comfortable walking shoes are essential for outdoor activities and exploring Ireland’s beautiful landscapes. So, when visiting Ireland in May, remember to dress comfortably and be prepared for varying weather conditions.

If the day’s forecast shows expected rain, you can head to the nearest landmark for an incredible time. If you’re in Dublin, we recommend visiting the Dublin Castle, the Botanical Gardens, the Dublin Zoo, and the Irish Museum of Modern Art/ IMMA. You can also visit the renowned Temple Bar to hear about local legends.

Overcast or Mostly Cloudy Days

The weather in Ireland in May can be overcast or mostly cloudy. However, this doesn’t mean you won’t have sunny days during your trip. Packaging and dressing are important, as the weather can change throughout the day. It’s better to be safe than sorry, so pack suitable layers that you can layer on or down based on the temperature. Rainfall is possible in Ireland during this time of year, so a long waterproof vest will be handy.

Don’t let the overcasting clouds discourage you from exploring the city. Check the weather forecast, but be prepared when venturing out. The frequent clouds travelling the horizon are one of Ireland’s trademarks. Besides, the weather might be cloudy, but May is known to have less rain than the previous months.

What to Wear for the Weather in Ireland in May

When packing for your trip to Ireland in May, bring layering essentials, waterproof outerwear, and comfortable walking shoes.

Layering Essentials

When travelling to Ireland in May, packing layering essentials is important. The weather can be quite changeable, with mild temperatures during the day and cooler evenings. It’s a good idea to bring lightweight clothing that can be easily layered, such as t-shirts or blouses, along with cardigans or sweaters for added warmth.

Remember a waterproof jacket or coat, as rain showers are common in Ireland year-round. This will help keep you dry and comfortable when exploring the country’s beautiful landscapes.

Pack a few pairs of pants or jeans that you can wear with your tops and layering pieces. For footwear, choose comfortable walking shoes suitable for urban exploration and countryside hikes.

Waterproof Outerwear

When visiting Ireland in May, it’s important to be prepared for the possibility of rain. Pack waterproof outerwear such as a rain jacket or a waterproof coat to stay dry during your explorations. This is especially important if you plan on spending time outdoors or engaging in activities like hiking or sightseeing.

The weather in Ireland can be unpredictable at times, so having proper protection against the rain will ensure you can still enjoy your adventures without getting soaked. Remember also to consider layering your clothing underneath the outerwear for added warmth and versatility.

Comfortable Walking Shoes

When exploring Ireland in May, comfortable walking shoes are essential. No matter your itinerary, you’re likely to spend much time on your feet, discovering beautiful landscapes and historical sites. Hence, these walking shoes will allow you to wander freely around the historical sites and the captivating Irish countryside.

Opt for sturdy shoes with good traction to navigate uneven terrain and hiking trails. Look for footwear that provides support and cushioning to ensure comfort throughout your adventures.

Remember that Ireland’s weather can be unpredictable, so choose waterproof shoes to keep your feet dry during rain showers. With comfortable walking shoes, you’ll be ready to explore all that Ireland offers without any discomfort or soreness in your feet.

The weather in Ireland in May is mild and pleasant, with average highs of 15°C/59°F and lows of 9°C/48°F. It’s a good time to visit as the days are mostly overcast or cloudy, and the tourist crowds haven’t built up yet. Remember to bring layering essentials, waterproof outerwear, and comfortable walking shoes when packing for May in Ireland.

Enjoy your trip!

FAQs

1. What is the weather in Ireland like in May?

The climate in Ireland during May is moderate, with average temperatures in Dublin being quite comfortable.

2. Is it a good time to visit Ireland in May?

Yes, many often say the best time to visit Ireland is May due to its temperate weather and various activities available.

3. How does Dublin’s weather vary over April, May, and June?

The spring weather brings gradual warmth from April through June; however, Dublin’s weather sees slight changes, including an increase in temperature by June compared to May or April

4. What are some things I can do while visiting Ireland in May?

You can enjoy plenty of things, such as exploring nature and attending local festivals/events, which usually occur during this month because of favourable Irish climate conditions.

5. Can you tell me more about May’s average high and low temperatures?

In general terms, most parts of Dublin city experience moderate high temperatures, with cooler dips expected during nighttime periods, causing lower monthly averages.

6. What type of clothes should I pack if I travel to Ireland for my holidays, taking into account forecasted temperatures throughout my trip?

When selecting clothing, consider fluctuating temperatures between day and night. Bring layerable options so you’re always prepared, no matter what comes your way!