Climate Overview
Dublin has an oceanic climate with cool 20°C summers and mild 8°C winters — no extremes either way. Rain is persistent year-round (43–78mm/month), humidity stays 77–84%, and sunshine is scarce. May–Sep is the driest, longest-daylight stretch; pack a waterproof regardless of month.
Monthly Climate
Temperature range, rainfall, and humidity by month
Monthly Data
| Month | High | Low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 7.6° | 1.2° | 76mm | 85% |
| Feb | 9.1° | 3.5° | 55mm | 80% |
| Mar | 11.9° | 3.7° | 24mm | 79% |
| Apr | 14.7° | 5.2° | 75mm | 79% |
| May | 17° | 6.3° | 50mm | 74% |
| Jun | 19.5° | 11° | 97mm | 78% |
| Jul | 20.9° | 12.5° | 88mm | 78% |
| Aug | 20.6° | 12.2° | 34mm | 76% |
| Sep | 16.9° | 8.6° | 83mm | 80% |
| Oct | 13.8° | 8.5° | 80mm | 82% |
| Nov | 11.3° | 5.1° | 125mm | 83% |
| Dec | 9.6° | 5.1° | 58mm | 81% |
When to Visit
Experiences to seek out and peak periods to plan around
Experiences & Highlights
Five-day festival peaking 17 March with the parade down O'Connell Street and Skyfest fireworks; cool 10–11°C days with 65mm average rainfall — pack a rain jacket.
16 June readings and Edwardian-dress walks retracing Joyce's Ulysses through Sandymount and Davy Byrnes; mild 18–19°C and the driest stretch of the year (~60mm).
Longest days and warmest highs (16–20°C) with the lowest rainfall of the year in May (~43mm); ideal for the Howth cliff path and deer-spotting in Phoenix Park.
Two-week festival across the Abbey, Gate, and Smock Alley. Autumn brings Dublin's wettest stretch (75–78mm) — perfect excuse for indoor venues and Temple Bar trad sessions.
Peak Periods & Travel Advisories
Hotel rates double around 17 March and city-centre accommodation sells out weeks ahead; book 2–3 months in advance.
Warmest months (20°C highs) coincide with US and European school holidays; Trinity College, Guinness Storehouse, and Cliffs of Moher day-trips require pre-booking.
Aviva Stadium home fixtures fill city-centre hotels on match weekends; rates spike Friday–Sunday and pubs run at capacity.
Official Resources
Government portals and tourism boards for Dublin, Ireland