Dublin Weather in September

With daytime temperatures of 30°C (86°F) and nighttime lows of 13°C (55°F), September in Dublin brings high temperatures during the day. The perfect weather makes it an appealing time to visit.

Rainfall in Dublin in September

Historically, September sees about a single day of rain, with a monthly average of 3.5 mm (0.1 in). If rain does fall, it tends to be very light and barely worth getting out an umbrella for.

Temperature in Dublin in September

September is a good time to be in Dublin. Days are perfect, reaching 30°C (86°F), with nights around 13°C (55°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. 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.

Sunshine in Dublin in September

Enjoy a sunny month with about 270 hours of sunshine, the clear skies make Dublin even more beautiful.

If you prefer dry days with pleasant temperatures, April, May, June and October typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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 the United States of America, check out our Dublin's climate page.

Dublin Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 30°C (86°F)  

Chance of Rain 3%  

Precipitation 3.5 mm (0.1 in)  

Rainy days a single day  

Humidity 73% *  

Sunshine 270 hours *  

Percentage Sunshine 73% *  

* Data from: San Francisco, the United States of America (40 KM, 25 Miles).

What to Wear in Dublin in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Dublin in September

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

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

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 the United States of America, check out our Dublin's climate page.

More climate data for Dublin

Temperature Rainfall Sunshine Humidity

See the full Dublin climate overview or explore weather in the United States of America.