Ireland Dublin Weather in August — Climate Guide
August in Dublin is very-high
August is very-high for Dublin.
August stays in peak season — mild, lively, and busy, averaging 19°C/12°C, much like July but typically a touch wetter. Days are still long (around 15 hours), though noticeably shortening by month's end.
The weather is pleasant summer-mild with frequent showers, so the layers-and-waterproof rule holds. It's a great time for the city's outdoor life and for coastal day trips, with warm-enough sea air at Howth and on the Cliffs of Moher tour.
Travel score
Dublin August Weather Stats
Avg High
19°C
Avg Low
12°C
Rainy Days
11
70mm total
Sunshine
5h
Daily avg
Humidity
78%
comfortable
UV Index
4
Moderate
Wind
13 km/h
Gusts 27
Crowds
Very busy
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
8 μg/m³
PM10
16 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
19°C
Nighttime
12°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 27 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Mild summer weather + long days
- Lively festivals and outdoor life
- Great for coastal day trips
- Bank-holiday buzz
Cons
- Peak crowds and highest prices
- Slightly wetter than July
- Hotels scarce — book far ahead
- Days shortening from late August
August Events & Festivals
- August bank holiday (first Monday) — long weekend
- Peak season + school holidays continue
- Summer festivals (dates vary)
- Long but shortening days
Dublin in August — Full Picture
August stays in peak season — mild, lively, and busy, averaging 19°C/12°C, much like July but typically a touch wetter. Days are still long (around 15 hours), though noticeably shortening by month's end.
The weather is pleasant summer-mild with frequent showers, so the layers-and-waterproof rule holds. It's a great time for the city's outdoor life and for coastal day trips, with warm-enough sea air at Howth and on the Cliffs of Moher tour.
Crowds and prices remain at their highest, with the August bank-holiday weekend especially busy — book hotels, attractions, and tours well ahead. School holidays keep families on the move across Ireland.
Festivals continue through the summer, and the long evenings still allow plenty of after-dinner exploring and beer-garden time.
Note: as ever, expect mild rather than hot, and be ready for showers. Late August begins the slide toward autumn, with shorter evenings and the first hint of cooler air.
What to Wear & What to Pack
Late summer — mild at around 19°C/12°C, similar to July but slightly wetter. Light layers, a sweater for evenings, and a light waterproof. Days still long (~15h light) but shortening.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
12.3°C
5.7°C
11/mo
Summer (Jun·Jul·Aug)
Current19°C
11.7°C
11/mo
Autumn (Sep·Oct·Nov)
13.7°C
7.7°C
12.3/mo
Winter (Dec·Jan·Feb)
8°C
3°C
12.3/mo
Dublin Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 8° | 3° | 13d·65mm | 1.8h | 85% | 1 | Quiet | Low season | |
| 8° | 3° | 11d·50mm | 2.6h | 84% | 1 | Quiet | Low season | |
| 10° | 4° | 11d·55mm | 3.5h | 81% | 2 | Busy | Peak | |
| 12° | 5° | 11d·55mm | 5.2h | 78% | 3 | Moderate | Shoulder | |
| May (Best) | 15° | 8° | 11d·60mm | 6h | 77% | 4 | Busy | Peak |
| June (Best) | 18° | 11° | 11d·65mm | 6h | 76% | 5 | Very busy | Peak |
| July (Best) | 20° | 12° | 11d·55mm | 5.5h | 76% | 5 | Very busy | Peak |
| August (Best) | 19° | 12° | 11d·70mm | 5h | 78% | 4 | Very busy | Peak |
| 17° | 10° | 11d·65mm | 4.2h | 80% | 3 | Busy | Peak | |
| 14° | 8° | 13d·80mm | 3.2h | 83% | 2 | Moderate | Shoulder | |
| 10° | 5° | 13d·75mm | 2h | 85% | 1 | Quiet | Low season | |
| 8° | 3° | 13d·75mm | 1.6h | 86% | 1 | Busy | Peak |
View Other Months
Dublin August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Dublin?
Dublin in August is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Dublin in August?
Dublin August averages a high of 19°C and a low of 12°C.
Does it rain much in Dublin in August?
Dublin August averages 70mm of rainfall over about 11 rainy days.
What should I wear in Dublin in August?
Late summer — mild at around 19°C/12°C, similar to July but slightly wetter. Light layers, a sweater for evenings, and a light waterproof. Days still long (~15h light) but shortening.
What time are sunrise and sunset in Dublin in August?
Dublin August sunrise is 06:10 and sunset is 20:40, with 14h 30min of daylight.
What's the air quality like in Dublin in August?
Dublin August air quality (AQI) averages 28, rated Good. PM2.5 averages 8μg/m³.
What activities are recommended in Dublin in August?
In August, Dublin is great for Howth & coastal walks, Cliffs of Moher & Glendalough day trips, Summer festivals.
Is August peak season in Dublin?
Dublin August crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Dublin
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.