Dun Laoghaire Weather in August

August in Dun Laoghaire brings pleasant temperatures around 19°C (66°F) during the day, dropping to 13°C (55°F) at night, with quite a bit of rainfall expected, averaging around 84 mm (3.3 in) for the month.

Rainfall in Dun Laoghaire in August

Historically, the month has about 16 days of rain, averaging 84 mm (3.3 in) in total. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Dun Laoghaire in August

In August, Dun Laoghaire gets pleasant temperatures, with highs of 19°C (66°F). Nights cool to around 13°C (55°F). August is in the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. On average, it sees the highest temps of the year.

Sunshine in Dun Laoghaire in August

The month experiences a moderate amount of sunlight, with 157 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in Dun Laoghaire in August

Wind speeds average 4 m/s (8 knots) during August. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

Average water temperature in August

With water at 15°C (59°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.

If you're inclined towards comfortable temperatures and drier conditions, August is a good time to visit Dun Laoghaire.

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For a detailed overview over the year and the best time to visit Ireland, check out our Dun Laoghaire's climate page.

Dun Laoghaire Temperature in August

Min Temperature 13°C (55°F)  

Max Temperature 19°C (66°F)  

Water Temperature 15°C (59°F) *  

Chance of Rain 53%  

Precipitation 84 mm (3.3 in)  

Rainy days 16 days  

Humidity 69% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 157 hours *  

Percentage Sunshine 35% *  

* Data from: Dublin, Ireland (17 KM, 10 Miles).

What to Wear in Dun Laoghaire in August

Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 15°C (59°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Dun Laoghaire in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Ireland, check out our Dun Laoghaire's climate page.

More climate data for Dun Laoghaire

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Dun Laoghaire climate overview or explore weather in Ireland.