Temperature in Dublin County in September

Dublin County is a region in Ireland. September is generally a moderate month with maximum daytime temperatures around 18°C and nighttime temperatures around 11°C in Dublin.

What is the temperature of the different cities in Dublin County in September?

Find the average daytime temperatures in September for the most popular destinations in Dublin County on the map below. Click on a destination dot for more detailed information.

Weather conditions Weather

Temperatures

Precipitation

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Legend

very warm

warm

pleasant

moderate

cold

very cold

Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

How much sun does Dublin County get in September?

Dublin enjoys a balanced 128 hours of sunlight. This makes it neither too overcast nor too sunny.

What is the water's temperature in September?

The water temperature averages approximately 15°C in Dublin this month, so not the best month to swim.

Interested in more climate information?

We have much more information about the climate in Dublin County. Interested in the weather conditions in a specific month? Select the month below.

January

February

March

April

May

June

July

August

September

October

November

December

Weather and climate has detailed information for every country in the world. Are you going to Ireland? Get detailed historical weather averages for many cities in Ireland.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.