Dublin Weather in August 2026
“Mild and bright — an underrated time to visit.”
Roughly 14 rainy days across the month, on average.
August in Dublin holds daytime highs at 19.1C (66.4F) and lows at 13C (55.4F), essentially matching July for warmth but with the year's second-wettest total of 82mm across 13.8 days. Sunshine slips to 9.9 hours a day and evenings shorten noticeably, with sunset dropping from 9.45pm to 8.30pm across the month. Blackberries fruit on Bull Island and the Wicklow heather turns purple by mid-month.
On the ground, August is bank holiday and festival-warmup month: the first Monday shuts everything, Beatyard runs in Dun Laoghaire, and the Fringe Festival opens final rehearsals in the Project Arts Centre. Rare 25C days push Dubliners to Sandycove's Forty Foot swim spot; offices empty by 3pm and pub gardens on Camden Street overflow. The Dalkey Book Festival late in the month draws serious literary crowds to the coastal village.
Ten-year data shows August has warmed less than any other summer month in Dublin, up just 0.3C since 2016, but rainfall has climbed sharply with three of the last five Augusts posting 100mm-plus totals. For 2026, models split between a warm-and-showery pattern and a cool-Atlantic conveyor; either way, expect at least one weekend written off by a named storm. Sea temperatures peak in mid-August at around 16C, the year's warmest.
Travelers arriving in Dublin in August 2026 face July-level prices but slightly less tour bus density as European school breaks stagger. The value move is basing outside Dublin 1 and Dublin 2; Portobello, Stoneybatter and Ranelagh offer 30 percent lower rates with 15-minute city access. Coastal weekends work well: Kinsale, Dingle and West Cork all run peak-season ferries and food scenes. August 2026 rewards travellers who commit to weather flexibility.
Real Dubliners drink in the Stoneybatter triangle around Mulligan Grocers, not Temple Bar which locals call 'the tax on tourists.' The 46A bus to Dun Laoghaire beats any tour to see Joyce's Martello tower. Coppers nightclub on Harcourt Street is where nurses and gardai marry each other after 3am shifts. Boxty and coddle are winter-only; smoked mackerel from Cavistons in Glasthule is the summer move.
What to pack for Dublin in August
August in Dublin needs summer clothes plus reliable rain kit for the second-wettest month. A packable windproof shell rated for 40mph gusts because Dublin's rain moves sideways off the Irish Sea:
- T-shirts and one merino long-sleeve for cool 13C mornings
- Waterproof jacket, this is the wettest summer month statistically
- Light jumper for pub gardens after 8pm
- Waterproof trainers or leather shoes; canvas gets ruined fast
- Small umbrella if you refuse to use a hood
What to pack for Dublin in August
- →Breathable travel pantsAmazon · shop this
- →Compact travel umbrellaAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
- →Polarized sunglassesAmazon · shop this
- →Universal travel adapterAmazon · shop this
- →Compression packing cubesAmazon · shop this
We may earn a small commission on any purchase — it doesn't change the price you pay.
Where to stay in Dublin
We don't review individual hotels — plenty of people do that well. What we do is send you to compare rooms in Dublin across trusted platforms.
Compare hotels on Booking.com→Estimated August trip to Dublin
Peak season prices — book early or shift by 2–3 weeks to save. Rule-based estimates from a couple based in London — actual prices vary.
We may earn a commission if you book through these links, at no cost to you. Estimates use rule-based averages; check partner sites for live pricing.
Plan your Dublin trip
Handpicked services from partners we trust. One tab for everything you'll need after the flight is booked.
Compare rooms in Dublin on Booking.com.
Skip-the-line tickets, day trips, food walks and guided tours.
Compare fares with cashback on every booking.
Instant data on arrival — no roaming charges, no SIM swap.
Flexible monthly coverage for trips of any length.
Compare 900+ rental brands with free cancellation.
Book a driver in advance — fixed price, no queue.
We may earn a commission if you book through these links, at no cost to you.
Things worth doing
August bank holiday Beatyard in Dun Laoghaire, Dalkey Book Festival, Fringe Festival previews at Project Arts Centre, Forty Foot swim, Wicklow heather walks around Sally Gap, coastal cycle Sutton to Howth, Kilkenny day trip, seafood at Cavistons in Glasthule.
August vs. the rest of the year
How this month compares in Dublin. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit Dublin
August is one of the best months to visit Dublin — alongside May, June, July. 11-year climate data (2015–2025) confirms it: comfortable temperatures, manageable rainfall, and a healthy dose of sunshine.
See the full best-time-to-visit guide for DublinOther places with a similar climate right now
Dublin in August — FAQ
Q01Should I visit Dublin in August?
Should I visit Dublin in August?
Yes — it is a good time to visit, with pleasant, comfortable weather. In August, Dublin averages a high of 19°C (67°F) and a low of 13°C (55°F), with 82mm of rainfall across roughly 14 rainy days. May-June catches the Liffey Boardwalk in daylight until 10pm plus Bloomsday on June 16, before American tour buses swamp Temple Bar in July.
Q02What temperatures should I expect in Dublin during August?
What temperatures should I expect in Dublin during August?
The average high temperature in Dublin during August is 19°C (67°F), with an average low of 13°C (55°F). These figures are averaged from 11 complete years of daily records (2015–2025, Open-Meteo Archive). Rare 25C days push Dubliners to Sandycove's Forty Foot swim spot; offices empty by 3pm and pub gardens on Camden Street overflow.
Q03Is August a rainy month in Dublin?
Is August a rainy month in Dublin?
Dublin averages approximately 14 rainy days in August, with a total monthly rainfall of about 82mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days. Rain arrives as horizontal Atlantic mist, not downpour; DART trains keep running and locals never carry umbrellas, just hoods.
Q04How should I dress for Dublin in August?
How should I dress for Dublin in August?
For Dublin in August, pack layered clothing for changing temperatures, a compact umbrella or waterproof jacket, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month. A packable windproof shell rated for 40mph gusts because Dublin's rain moves sideways off the Irish Sea.
Q05Is August a busy travel month for Dublin?
Is August a busy travel month for Dublin?
Tourist crowds in Dublin during August are typically moderate. Consider this when planning accommodation — prices track crowd levels closely. Real Dubliners drink in the Stoneybatter triangle around Mulligan Grocers, not Temple Bar which locals call 'the tax on tourists.' The 46A bus to Dun Laoghaire beats any tour to see Joyce's Martello tower. Coppers nightclub on Harcourt Street is where nurses and gardai marry each other after 3am shifts. Boxty and coddle are winter-only; smoked mackerel from Cavistons in Glasthule is the summer move.