Typical Weather

Weather in Dublin in September

How warm is it in Dublin in September?

In September the typical daytime high in Dublin is 17.7 °C on average, from 19.2 °C at the start to 16.2 °C at the end of the month.

That is 2.3 °C cooler than in August and 3.3 °C warmer than in October.

The last 10 years were 1.1 °C warmer than more than 40 years ago.

Click a day for more: afternoon and night, the usual range, records and how fast it is warming.

Measured at the weather station Dublin Phoenix Park, 6 km away.