Donegal Weather in September

Donegal in September sees high daytime temperatures of 23°C (73°F) and nighttime lows of 11°C (52°F). Rainfall is fairly high this month at around 97 mm (3.8 in), so pack a rain jacket to stay dry.

Rainfall in Donegal in September

Analyzing past climate data, one can expect approximately 12 days of rain, averaging 97 mm (3.8 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Donegal in September

September is one of the better months to visit Donegal. Expect 23°C (73°F) during the day and 11°C (52°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Donegal in September

The days are predominantly sunny, with an estimated total of around 199 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If your ideal day consists of dry skies and pleasant temperatures, September typically offers the best circumstances for Donegal.

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• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Donegal's climate page.

Donegal Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 40%  

Precipitation 97 mm (3.8 in)  

Rainy days 12 days  

Sunshine 199 hours *  

Percentage Sunshine *  

* Data from: Frostburg, the United States of America (63 KM, 39 Miles).

What to Wear in Donegal in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Donegal in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Donegal's climate page.

More climate data for Donegal

Temperature Rainfall Sunshine

See the full Donegal climate overview or explore weather in the United States of America.