Dublin in May
In May, Dublin averages 16°C (61°F) during the day and 8°C (46°F) at night, with around 10 days of rain (60 mm total).
ShoulderConditions are cool — bring a jacket for evenings. Plan for unsettled weather and bring rain gear.
May in Dublin is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
How May compares to the rest of the year in Dublin
May is in the middle of the year for warmth in Dublin (5th of 12) and one of the driest months (11th of 12). Daytime temperature runs 2°C above the annual average (14°C). May runs 3°C warmer than April (13°C) and warms a further 3°C into June (19°C).
May sunrise & sunset in Dublin
Times shown for Dublin local time (Europe/Dublin), calculated for the 15th of May. They shift by a few minutes day to day across the month.
Photography light in Dublin — May
Golden-hour and blue-hour windows for the 15th of May, in Dublin's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Dublin in May
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on May's tier (Shoulder) and Dublin's popularity.
Crowds & pricing — May in Dublin
Dublin is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: comfortable tourism weather
Sun & mosquito risk — May in Dublin
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Dublin — May
Across the year Dublin's sea swings from 7.2°C (January) to 16.9°C (August) — May sits at 13.7°C.
Dublin in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 8°C / 46°F | 3°C / 37°F | 70 mm | 13 | 0 |
| February | 9°C / 48°F | 3°C / 37°F | 55 mm | 11 | 0 |
| March | 11°C / 52°F | 4°C / 39°F | 50 mm | 12 | 0 |
| April | 13°C / 55°F | 5°C / 41°F | 55 mm | 11 | 0 |
| May | 16°C / 61°F | 8°C / 46°F | 60 mm | 10 | 0 |
| June | 19°C / 66°F | 10°C / 50°F | 65 mm | 10 | 0 |
| July | 21°C / 70°F | 12°C / 54°F | 70 mm | 12 | 0 |
| August | 20°C / 68°F | 12°C / 54°F | 75 mm | 12 | 0 |
| September | 18°C / 64°F | 10°C / 50°F | 65 mm | 12 | 0 |
| October | 14°C / 57°F | 8°C / 46°F | 80 mm | 13 | 0 |
| November | 10°C / 50°F | 5°C / 41°F | 75 mm | 13 | 0 |
| December | 8°C / 46°F | 4°C / 39°F | 85 mm | 14 | 0 |
Other cities with similar May weather
🌍 See the full ranked list of climate twins for Dublin in May →
Frequently asked questions
How hot is Dublin in May?
In May, Dublin averages a high of 16°C (61°F) and a low of 8°C (46°F) — generally cool.
Does it rain a lot in Dublin in May?
May can be fairly wet in Dublin, with about 10 rainy days on average.
Is May a good time to visit Dublin?
May is cool. It suits travelers who are comfortable with cool weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Dublin in May?
Pack a warm jacket and layers, plus a compact umbrella or rain jacket. See the full May packing list for Dublin for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.