August in Dublin averages highs of 19 °C (66 °F) and lows of 13 °C (55 °F), with about 10 rainy days and 14 h 46 min of daylight.
August weather in Dublin at a glance
average high to low each dot ≈ 3 rainy days
Is August a good time to visit Dublin?
Good time to go: comfortably warm and some rain. August is usually high season in Dublin: book rooms early, as prices are typically at their highest.
Our rule: a month scores 2 points for comfortable average highs of 18–28 °C (1 point for 14–18 or 28–32 °C) and 2 points for 5 or fewer rainy days (1 point for 6–10). Average highs above 35 °C or below 8 °C make it a tough month whatever the rain. A rainy day here means 2 mm of rain or more. 4 points = great, 3 = good, 2 = mixed, 0–1 = tough.
Holidays and events in August 2026
- Mon 3 Aug: August Holiday (Lá Saoire i mí Lúnasa) public holiday
Banks and many shops close on public holidays, and museums may change their hours, so check before you go.
Things to do in Dublin in August
August's weather suits a mix of outdoor sights and museums, so the open-air ones come first.
- St Stephen's Green and Grafton Street outdoors
- Howth cliff walk — 30 min by DART outdoors
- Trinity College and the Book of Kells — timed tickets indoors
- Guinness Storehouse indoors
- Kilmainham Gaol — book well ahead indoors
- Traditional music pubs indoors
Where to stay: Around Temple Bar and St Stephen's Green to walk everywhere; Smithfield or Portobello for better value.
What to pack for Dublin in August
- Light layers for the day and a jumper for evenings, which cool to 13 °C (55 °F).
- An umbrella or a light waterproof: about 10 days this month see real rain.
- Comfortable walking shoes.
What a day in Dublin costs
| Budget traveller | Mid-range | |
|---|---|---|
| Typical total per person, per day | €70–160 | €200–400 |
Excluding flights. August is usually high season in Dublin: book rooms early, as prices are typically at their highest.
August in nearby cities
| City | High / low | Rainy days | Verdict |
|---|---|---|---|
| Edinburgh | 18° / 12° | 11 | Tough month |
| London | 22° / 14° | 7 | Good time to go |
| Amsterdam | 22° / 14° | 10 | Mixed weather |
Want the whole trip planned? Join the Journey waitlist: tell it where, when and your budget, and it plans every day hour by hour.
FAQ
Is August a good time to visit Dublin?
By the numbers, August is a good time to go: comfortably warm and some rain, with average highs of 19 °C (66 °F) and about 10 rainy days. August is usually high season in Dublin: book rooms early, as prices are typically at their highest. The best months for weather are August.
How warm is Dublin in August?
Average highs are 19 °C (66 °F) and lows 13 °C (55 °F) (2015–2024 averages).
Does it rain a lot in Dublin in August?
Expect about 10 days with 2 mm of rain or more, about 82 mm in total. It is the 5th driest month of the year in Dublin.
Sources: climate averages from Open-Meteo historical weather (ERA5 reanalysis, 2015–2024); sea temperatures from the Open-Meteo marine API (2023–2024); public holidays from Nager.Date. Daylight is calculated for the 15th of the month. Averages are a guide, not a forecast. Costs are typical ranges per person per day, excluding flights.