Dublin in August
In August, Dublin averages 20°C (68°F) during the day and 12°C (54°F) at night, with around 12 days of rain (75 mm total).
Peak seasonConditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
August offers comfortable temperatures in Dublin, with some rain to plan around.
How August compares to the rest of the year in Dublin
August is one of the warmest months in Dublin (2nd of 12) and moderately rainy compared to the rest of the year (7th of 12). Daytime temperature runs 6°C above the annual average (14°C). August runs 1°C cooler than July (21°C) and cools 2°C in September (18°C).
August sunrise & sunset in Dublin
Times shown for Dublin local time (Europe/Dublin), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Dublin — August
Golden-hour and blue-hour windows for the 15th of August, in Dublin's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Dublin in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (Peak season) and Dublin's popularity.
Crowds & pricing — August in Dublin
Dublin is in peak season during this month — expect bigger crowds at famous sights, higher hotel and flight prices, and longer queues. Restaurant reservations a few days out are advisable, and any boutique hotels you have your eye on should be booked weeks ahead. The trade-off: most attractions, restaurants, and seasonal services are fully open, the weather is at its most reliable, and the city feels at its most alive.
Why this tier: excellent tourism weather Northern Hemisphere summer holidays
Sun & mosquito risk — August in Dublin
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Dublin — August
Across the year Dublin's sea swings from 7.2°C (January) to 16.9°C (August) — August sits at 16.9°C.
Dublin in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 8°C / 46°F | 3°C / 37°F | 70 mm | 13 | 0 |
| February | 9°C / 48°F | 3°C / 37°F | 55 mm | 11 | 0 |
| March | 11°C / 52°F | 4°C / 39°F | 50 mm | 12 | 0 |
| April | 13°C / 55°F | 5°C / 41°F | 55 mm | 11 | 0 |
| May | 16°C / 61°F | 8°C / 46°F | 60 mm | 10 | 0 |
| June | 19°C / 66°F | 10°C / 50°F | 65 mm | 10 | 0 |
| July | 21°C / 70°F | 12°C / 54°F | 70 mm | 12 | 0 |
| August | 20°C / 68°F | 12°C / 54°F | 75 mm | 12 | 0 |
| September | 18°C / 64°F | 10°C / 50°F | 65 mm | 12 | 0 |
| October | 14°C / 57°F | 8°C / 46°F | 80 mm | 13 | 0 |
| November | 10°C / 50°F | 5°C / 41°F | 75 mm | 13 | 0 |
| December | 8°C / 46°F | 4°C / 39°F | 85 mm | 14 | 0 |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Dublin in August →
Frequently asked questions
How hot is Dublin in August?
In August, Dublin averages a high of 20°C (68°F) and a low of 12°C (54°F) — generally mild and pleasant.
Does it rain a lot in Dublin in August?
August can be fairly wet in Dublin, with about 12 rainy days on average.
Is August a good time to visit Dublin?
August is mild and pleasant. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Dublin in August?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full August packing list for Dublin for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.