When to go · Dublin, Ireland
Best time to visit Dublin
The sweet spot is July, August and September — averages 17°C, 11 rainy days, peak-season crowds and peak prices.
May–September for the long evenings — midsummer light lasts past 22:00. March brings St Patrick's Festival and the year's highest prices.
Temperate maritime: mild and changeable all year (5–20°C), rarely freezing or hot. Rain comes in short bursts most months rather than long spells.
The short answer
17°C · 11 rainy days · high season
16°C · 11 rainy days · high season
14°C · 11 rainy days · mid season
Hardest months: March and December. averages a raw 7°C, 11 rainy days, peak-season crowds and peak prices.
Month by month
| Month | Avg temp | Rain days | Crowds | Verdict |
|---|---|---|---|---|
| January | 5°C | 13d | low | Wet |
| February | 5°C | 10d | low | Cold |
| March | 7°C | 11d | high | Cold |
| April | 9°C | 10d | mid | Chilly |
| May | 12°C | 10d | mid | Chilly |
| June | 15°C | 10d | high | Mild |
| July | 17°C | 11d | high | Comfortable but damp |
| August | 16°C | 11d | high | Comfortable but damp |
| September | 14°C | 11d | mid | Mild |
| October | 11°C | 12d | mid | Wet |
| November | 8°C | 12d | low | Wet |
| December | 6°C | 13d | mid | Wet |
Verdicts are read off the three columns to their left — temperature distance from 21°C first, then rainfall, with crowds breaking ties. Averages, so any given week can differ.
If you'd rather go cheap than perfect
January, February and November are low season in Dublin — thinner crowds, and the months where accommodation is easiest to book late. Budget travellers already work to about $70–130 a day here; low season is where the accommodation share of that goes furthest.
Book the month you picked
Fares move with the same seasons as the crowds — the quiet months above are usually the cheap ones to fly.