Ireland weather in September
Are you planning a trip to Ireland in September and wondering what kind of weather to expect? This page has all the details you need.
What is the weather like in Ireland in September?
September in Ireland generally has temperatures that range from moderate to pleasant, with precipitation levels ranging from moderate to high.
During the day the temperature is moderate in Greencastle at 16°C and pleasant in Drogheda at 18°C. As night falls, temperatures generally drop to 11°C in Drogheda and 12°C in Greencastle.
In September, precipitation varies across different areas. From moderate rainfall in Kilkenny with an average of 69 mm to high rainfall in Kincasslagh with 144 mm. Dublin enjoys a balanced 128 hours of sunlight. Ensuring it's neither too overcast nor too sunny.
To learn more about the conditions in specific areas of Ireland in September, check out the map below. For more details on the yearly weather, visit our Ireland climate page.
Where to go in Ireland in September
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Popular destinations in Ireland
What is the weather like in September for the 5 most popular destinations in Ireland?
Average weather in Dublin
In September Dublin generally has moderate temperatures with maximum daytime temperatures around 18°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are pleasant that month.
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Average weather in Killarney
In September Killarney 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.
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Average weather in Galway
In September Galway 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.
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Average weather in Kenmare
In September Kenmare 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 tolerable that month.
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Average weather in Cork
In September Cork generally has moderate temperatures with maximum daytime temperatures around 18°C, minimum nighttime temperatures around 12°C and moderate monthly rainfall. So on average the conditions are pleasant that month.
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Is your destination not in the list? Have a look at other destinations in Ireland.
Is September the best time to visit Ireland?
In our opinion, September is a good time to visit Ireland with overall pleasant weather in Dublin. It's worth noting that weather conditions might differ depending on the location you visit.
On average, the best time to visit Ireland is in July and August with generally perfect weather in Dublin. On the other hand, the weather in January, February and December tend to be poor.
Interested in more climate information?
We have much more information about the climate in Ireland.
Interested in the weather conditions in a specific month? Select the month below.
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 climate conditions. Find out where to go with our weather planner.