Ireland (Dublin) · May
Best travel monthTravel seasonIreland · Europe
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 8° (46°)3– (37–)13 (55) | 9° (48°)3– (37–)13 (55) | 10° (50°)5– (41–)14 (57) | 12° (54°)7– (45–)17 (63) | 15° (59°)10– (50–)20 (68) | 18° (64°)12– (54–)23 (73) | 20° (68°)14– (57–)23 (73) | 19° (66°)14– (57–)22 (72) | 17° (63°)12– (54–)21 (70) | 14° (57°)10– (50–)18 (64) | 11° (52°)4– (39–)15 (59) | 9° (48°)3– (37–)14 (57) |
Ø night, range from coldest to warmest nightØ nightrange | 3° (37°)-3– (27–)9 (48) | 3° (37°)-3– (27–)9 (48) | 3° (37°)-3– (27–)9 (48) | 5° (41°)-2– (28–)9 (48) | 8° (46°)1– (34–)12 (54) | 10° (50°)4– (39–)15 (59) | 12° (54°)6– (43–)16 (61) | 12° (54°)6– (43–)16 (61) | 10° (50°)4– (39–)15 (59) | 8° (46°)1– (34–)13 (55) | 5° (41°)-2– (28–)12 (54) | 4° (39°)-3– (27–)10 (50) |
☀️Sunshine | 2h UV 1 | 3h UV 3 | 4h UV 4 | 5h UV 5 | 6h UV 6 | 6h UV 6 | 5h UV 6 | 5h UV 6 | 4h UV 4 | 3h UV 3 | 2h UV 2 | 1h UV 1 |
🌊Water Temp | 9° (48°) | 8° (46°) | 8° (46°) | 10° (50°) | 12° (54°) | 14° (57°) | 16° (61°) | 16° (61°) | 15° (59°) | 14° (57°) | 11° (52°) | 10° (50°) |
🌧Rain Days | 8d54mm (2.1") | 6d46mm (1.8") | 7d53mm (2.1") | 6d39mm (1.6") | 7d48mm (1.9") | 7d55mm (2.2") | 8d64mm (2.5") | 7d69mm (2.7") | 7d55mm (2.2") | 8d73mm (2.9") | 8d71mm (2.8") | 9d65mm (2.6") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Travel season — mid-range prices, good availability.
May is one of the best months to visit Ireland (Dublin) — with 6 sunshine hours per day and pleasant highs of 15°C (59°F).
Daytime highs average 15°C (59°F), cooling to 8°C (46°F) at night (daily average: 12°C (54°F)). Peaks reach around 20°C (68°F), the coldest nights around 1°C (34°F). The sun shines an average of 6 hours per day; there are 7 rain days with 48 mm (1.9 in) total. At 12°C (54°F), the water is still quite cool in May — a wetsuit may be useful.
Layer up — warm days and cool evenings alternate. Perfect timing for hikes and sightseeing.
St Patrick's Day turns the city green around 17 March, after which things calm down. April is comparatively dry with six rainy days, and May brings six hours of sunshine a day. The parks bloom and the coast around Howth is hiked again.
Packing list for Ireland (Dublin) in May
- Warm jacket
- Jumpers and warm layers
- Long trousers
- Warm shoes
- Sunscreen
- Sunglasses
- Light umbrella or rain poncho
- Travel first-aid kit
Frequently Asked Questions
- Is May a good time to visit Ireland (Dublin)?
- Yes — May is one of the best months to visit Ireland (Dublin) (Climate Score: 62/100). Pleasant temperatures (15°C (59°F)), good sunshine (6 h/day), and few rain days (7) make it one of the most recommended months.
- How warm is it in Ireland (Dublin) in May?
- In May, Ireland (Dublin) sees daily highs of 15°C (59°F). Nights cool to 8°C (46°F), with a daily average of 12°C (54°F). Peaks reach around 20°C (68°F), the coldest nights around 1°C (34°F).
- How much rain falls in Ireland (Dublin) in May?
- In May, Ireland (Dublin) receives an average of 48 mm (1.9 in) of rain over 7 rain days. An umbrella may occasionally be needed.
- How many sunshine hours does Ireland (Dublin) get in May?
- Ireland (Dublin) averages 6 sunshine hours per day in May — above the annual average.
- How warm is the water in Ireland (Dublin) in May?
- Water temperature in Ireland (Dublin) in May averages 12°C (54°F) — still quite cool — a wetsuit may be useful.
