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The Weather in Dublin in August

Updated: June 30, 2023

This post covers the weather in Dublin in August, including average temperatures and precipitation, as well as tips on what to pack.

Summer remains in full bloom in Dublin during August and features comfortable days and cool nights.

How Hot Is Dublin in August?

Daytime high temperatures during August will average around 20 C (68 F) early in the month, falling to around 18 C (64-65 F) near the end of the month. 

A few of the warmer afternoons will reach up near 22 C (about 72 F).

The record high temperature in Dublin during August is 28.7 C (83.7 F).

Late night and early morning low temperatures will tend to be near 12-13 C (54-55 F) early in the month, cooling to near 11C (52 F) by the end of the month. 

A few of the cooler mornings, especially near the end of the month, can dip down to around 8-9 C (about 47 F).  The record low temperature in Dublin during August is 2.4C (36.3 F).  

Sun and Rain

About 15 days this month will feature sunny or at least partly sunny skies in Dublin. 

Some rain occurs on average about 16 days during August but only about 4 of these days will record rainfalls of 5mm (0.2 inches) or more.


Daylight hours decrease throughout this month ranging from about 15.6 hours on the 1st down to 13.7 hours by the 30th. 


Wind speeds during August range mostly from gentle at 8-12 mph/12-19 kph to moderate at 13-18 mph/20-28 kph but can briefly be fresh at 19–24 mph/29-38 kph, especially near the end of the month.

Ocean Temperatures

Dublin lies along the western edge of the Irish Sea which during August is still quite chilly with temperatures averaging near 14-15 C (58-59 F).

What to Wear in Dublin in August?

August is the end of Summer so dress in layers as late night and early morning temperatures can be chilly, especially towards the end of the month.

Afternoons, however, still tend to be mild to warm.

Also bring both short and long-sleeved shirts, warm socks, and water-resistant walking shoes or boots. 

In addition, jeans, or other travel pants along with a light-weight jacket and a sweater or two are suggested.

Things to Do in Dublin in August

Since there will likely be plenty of sunny days to enjoy in Dublin this month, it's an excellent time of year to take a pay-what-you-wish walking tour.

This will also be a good time to attend a sporting event, as the Bohemian FC will be playing at least a few home games this month.

There are usually at least a few decent concerts to see during the summer as well.

If it's particularly warm, you might want to consider taking a boat tour or a cruise.

Fred Pickhardt
Ocean Weather Services

About The Author

Fred Pickhardt

Fred is a marine meteorologist and sailed briefly with American Export Lines in the Far East trade. He has extensive experience in weather analysis, weather forecasting, and forensic weather event reconstructions. Fred founded Ocean Weather Services and currently provides forensic marine weather reports to the maritime industry.
Updated: June 30th, 2023
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