Donegal County, Ireland, a region in Ireland, typically experiences mild weather in September, with maximum daytime temperatures around 17°C (63°F) and nighttime temperatures around 10°C (50°F) in Bundoran.
To get a sense of September's typical temperatures in the key spots of Donegal County, explore the map below. Click on a point for an in-depth look.
Pick a month to see the average temperature, rainfall and sunshine in Donegal County - and find the best time to visit. See also: Donegal County weather by month.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Donegal County.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Bundoran averages a daytime high of 17°C (63°F) in September, which is moderate for Donegal County, Ireland.
Nighttime temperatures in Bundoran typically drop to around 10°C (50°F) in September.
We have much more information about the climate in Donegal County.
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.
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