Donegal weather in September (Donegal County, Ireland)

What weather conditions can you expect in Donegal this September? Use this page to get an overview of the month’s weather conditions.

Temperatures

Typically, September in Donegal includes moderate temperatures and high rainfall. Throughout the day, temperatures typically settle at around 17°C. But by evening, they drop to around 10°C.

Precipitation

Donegal in September usually receives high rainfall, averaging around 107 mm for the month. Looking at the last 30 years, the data shows about 22 days with rain.

Average sunshine

The month brings about 118 hours of sunlight, offering a comfortable mix of sun and shade.

Should you favor a climate that's both dry and comfortably warm July and August typically offer the most agreeable circumstances. On the other hand, January, February, March, November and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Donegal climate page with graphs.

 

Donegal, monthly averages in September

Min Temperature 10°C  

Max Temperature 17°C  

Chance of Rain 72%  

Precipitation 107 mm  

Rainy days 22 days  

Sunshine 118 hours *  

Percentage Sunshine *  

Data from: Derry, Ireland (63 KM, 39 Miles).

Where to go in Ireland in September

Find out more about the weather in Ireland and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Donegal, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Donegal.

Our site offers climate and forecast data for every country in the world. Are you going to Ireland? On this website you can find 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.