Ballyshannon Temperature by Month

The average annual maximum temperature in Ballyshannon, Donegal County, Ireland is 13°C (55°F), with daytime highs ranging from 9°C (48°F) in January to 19°C (66°F) in July. This page covers monthly averages, day-night differences, and how Ballyshannon compares to cities worldwide.

The weather in Ballyshannon changes moderately throughout the year, offering enough variation to appreciate each season. Nights are cooler, with lows ranging from 12°C (54°F) to 3°C (37°F).

The chart below illustrates the average maximum day and minimum night temperatures in Ballyshannon by month:

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak.

The chart below shows the average temperature throughout the year:

Ballyshannon's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Ballyshannon this rarely lasts long on the ground.

For more on Ballyshannon's weather, including monthly rainfall, sunshine hours, and humidity, visit our Ballyshannon climate page.