Average Weather during September in Dublin (Dublin County), Ireland

The average minimum temperature (usually the minimum temperature is noted during the night) in Dublin in September is 9.0°C (48.2°F). The amount of rain in September is normal with an average of 66mm (2.6in). The average maximum temperature lies around 16.0°C (60.8°F). With a water temperature of around 14.0°C (57.2°F), this is not the best month to swim. You will see the sun occasionally during this month, it has 128 hours of sun.

So what to wear in September? Visitors traveling to Dublin should plan on bringing a totally waterproof rain jacket since it will often be raining. Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly.

No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go here.

For other monthly average weather and what to do in September look at the numbers below.

Monthly Averages

Show in Fahrenheit

Min Temperature 9 °C
Max Temperature 16 °C
Water Temperature 14 °C
Chance of Rain 57%
Precipitation 66mm
Rainy Days 17
Sunshine Hours 128

What To Do

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

Swimming
5/10
Cycling
6/10
Walking
6/10
Camping
4/10
Outdoor sports
10/10

More Climate Information For Dublin

Weather and Climate offers all the information you need to know about the climate in Dublin.

We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in Ireland and climate and forecast data for all other countries in the world.