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Weather in September in Mayo

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

What is the weather like in Mayo in September?

Mayo is a region in Ireland. September in Mayo 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 Westport.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Claremorris with an average of 86 mm to high rainfall in Louisburgh with 127 mm.

Average sunshine

Westport experiences limited sunny days, amounting to roughly 93 hours of sunshine. This makes it perfect for those who prefer dimmer, cloudier settings rather than intense sunlit days

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

Where to go in Mayo in September

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

Map not visible? Whoops sorry! Please refresh the page.
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 Mayo?

Westport

In September Westport 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.

Westport
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 
118 hours 
112 mm 
21 days 
17°C 
10°C 
93 hours 
101 mm 
21 days 
October   >> October
>>  
14°C 
8°C 
74 hours 
123 mm 
23 days 
Climate in Westport

Cong

In September Cong generally has moderate temperatures with maximum daytime temperatures around 18°C, minimum nighttime temperatures around 10°C and moderate monthly rainfall. So on average the conditions are pleasant that month.

Cong
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 
11°C 
118 hours 
110 mm 
20 days 
18°C 
10°C 
93 hours 
95 mm 
20 days 
October   >> October
>>  
14°C 
7°C 
74 hours 
115 mm 
22 days 
Climate in Cong

Castlebar

In September Castlebar 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.

Castlebar
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 
118 hours 
107 mm 
20 days 
17°C 
10°C 
93 hours 
94 mm 
21 days 
October   >> October
>>  
14°C 
8°C 
74 hours 
114 mm 
23 days 
Climate in Castlebar

Ballina

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

Ballina
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 
118 hours 
115 mm 
20 days 
17°C 
11°C 
93 hours 
104 mm 
21 days 
October   >> October
>>  
14°C 
8°C 
74 hours 
126 mm 
23 days 
Climate in Ballina

Belmullet

In September Belmullet generally has moderate temperatures with maximum daytime temperatures around 17°C, minimum nighttime temperatures around 12°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Belmullet
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 
13°C 
142 hours 
109 mm 
21 days 
17°C 
12°C 
118 hours 
110 mm 
22 days 
October   >> October
>>  
14°C 
10°C 
90 hours 
138 mm 
24 days 
Climate in Belmullet

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

Is September the best time to visit Mayo?

In our view, September might not be the best time to travel to Mayo with often unpleasant weather in Westport.

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

Interested in more climate information?

We have much more information about the climate in Mayo. 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.