Ireland
Best Time to Visit Dublin
Dublin's weather is mild year-round but notoriously wet, with no truly bad month—just varying degrees of rain and crowds. The best time blends decent skies with manageable visitor numbers, avoiding the school-holiday crush and the deepest winter gloom.
✦ Go in late May or early September for the best balance of mild weather, long days, and sane prices.
✅ Best months
May, June and September: May offers long daylight and blooming parks, June brings the longest days and warmth, September has settled weather and thinner crowds than high summer.
🔥 Peak season
July and August: school holidays fill the city, hotel rates spike 30–50% above shoulder-season averages, and events like the St Patrick’s Festival (March) and Bloomsday (June) also push prices briefly.
💷 Shoulder (best value)
Late April–early June and September–October: hotel discounts of 20–30%, mild temperatures (12–17°C), and fewer tour groups; the Luas and pubs feel less crammed.
🌙 Quietest & cheapest
November–February (excluding Christmas week): cheapest flights and hotels (up to 50% off peak), but short daylight (8 hours), persistent rain, and some attractions closed for maintenance.
Dublin season by season
Spring (Mar–May)
Weather: cool 7–12°C, mixed rain and sun, blossoms in St Stephen’s Green
Crowds: low rising to medium
affordable for St Patrick’s Festival week if you book early; daffodils and lighter evenings.
Summer (Jun–Aug)
Weather: mild 14–19°C, long days (sunset after 9pm), occasional rain showers
Crowds: high
festival season — Bloomsday in June, music gigs, outdoor markets; book everything ahead.
Autumn (Sep–Nov)
Weather: 12–16°C in Sep, dropping to 6–10°C by Nov; crisp, often dry early autumn
Crowds: medium, then low
Dublin Theatre Festival in Sep/Oct; quieter pace, good pub atmosphere.
Winter (Dec–Feb)
Weather: cold 4–8°C, frequent light rain, gales possible, shortest days (8 hours)
Crowds: low
Christmas lights and markets in December; January and February are quietest for museums and literary pub crawls.
🎭 Events worth timing a trip around
St Patrick’s Festival (March) – a five-day blowout of parades and céilís. Bloomsday (16 June) – fans of Joyce dress in Edwardian clothes and follow Ulysses' route around the city.
🧳 What to pack
Always carry a water-resistant jacket and a foldable umbrella; Dublin can shift from drizzle to downpour and back within an hour, even in summer.
Found your dates? Get your hotel briefing.
Room tips, the 14-day forecast for your exact stay, dining, transport and more — free for any Dublin hotel.
Researched & reviewed by the TripSage editorial team · Updated July 2026.