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Weather in September in Donegal County

Are you planning a trip a to Donegal County in September and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in Donegal County in September?

Donegal County is a region in Ireland. September in Donegal County generally has mild temperatures, with precipitation levels ranging from moderate to high.

Temperatures

You can expect mild maximum daytime temperatures of around 17°C and nighttime temperatures around 10°C in Bundoran.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Derry with an average of 88 mm to high rainfall in Kincasslagh with 144 mm.

For a closer look at September's conditions in Donegal County, see the map below. For a more detailed look at Donegal County's yearly weather, check out our Donegal County climate page.

Where to go in Donegal County in September

Find more information for the most popular destinations in the Donegal County on the map below. Click on a destination dot for more detailes.

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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).

Popular destinations

What is the weather like in September for the 5 most popular destinations in Donegal County?

Bundoran

In September Bundoran generally has moderate temperatures with maximum daytime temperatures around 17°C, minimum nighttime temperatures around 10°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Bundoran
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
19°C 
12°C 
121 mm 
20 days 
17°C 
10°C 
105 mm 
22 days 
October   >> October
>>  
14°C 
8°C 
122 mm 
23 days 
Climate in Bundoran

Donegal

In September Donegal generally has moderate temperatures with maximum daytime temperatures around 17°C, minimum nighttime temperatures around 10°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Donegal
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
18°C 
11°C 
140 hours 
124 mm 
21 days 
17°C 
10°C 
118 hours 
107 mm 
22 days 
October   >> October
>>  
14°C 
7°C 
103 hours 
122 mm 
23 days 
Climate in Donegal

Letterkenny

In September Letterkenny generally has moderate temperatures with maximum daytime temperatures around 17°C, minimum nighttime temperatures around 10°C and moderate monthly rainfall. So on average the conditions are tolerable that month.

Letterkenny
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
18°C 
12°C 
140 hours 
115 mm 
20 days 
17°C 
10°C 
118 hours 
99 mm 
22 days 
October   >> October
>>  
14°C 
8°C 
103 hours 
111 mm 
23 days 
Climate in Letterkenny

Buncrana

In September Buncrana generally has moderate temperatures with maximum daytime temperatures around 17°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are tolerable that month.

Buncrana
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
19°C 
12°C 
140 hours 
109 mm 
20 days 
17°C 
11°C 
118 hours 
92 mm 
21 days 
October   >> October
>>  
14°C 
8°C 
103 hours 
104 mm 
23 days 
Climate in Buncrana

Moville

In September Moville generally has moderate temperatures with maximum daytime temperatures around 16°C, minimum nighttime temperatures around 12°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Moville
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
17°C 
13°C 
140 hours 
118 mm 
20 days 
16°C 
12°C 
118 hours 
111 mm 
21 days 
October   >> October
>>  
14°C 
10°C 
103 hours 
136 mm 
23 days 
Climate in Moville

Is your destination not in the list? Have a look at other destinations in Donegal County, in Ireland.

Is September the best time to visit Donegal County?

In our view, September might not be the best time to travel to Donegal County with often unpleasant weather in Bundoran.

On average, the best time to visit Donegal County is in June, July and August with generally tolerable weather in Bundoran. On the other hand, the weather in January, February, March, November and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Donegal County. Interested in the weather conditions in a specific month? Select the month below.

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  • 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.

    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.