Cork weather in September (County Cork, Ireland)
How does the weather in Cork usually fare in September? Here’s everything you need to plan your visit.
Temperatures
The typical weather for September in Cork includes moderate temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 18°C. However, as the sun sets and evening approaches, there's a noticeable cool-down. Temperatures gently drop to a more temperate 12°C.
Precipitation
Cork in September usually receives moderate rainfall, averaging around 77 mm for the month. You can expect rain on around 17 days based on historical patterns.
Average sunshine
The area experiences a moderate amount of sunshine, with approximately 128 hours of sunlight expected. This makes it neither too gloomy nor overly bright.
Average windspeed
Wind speeds average 5 m/s during September. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in September
At 15°C, the water feels crisp and invigorating rather than welcoming. You'll likely need a few moments to adjust to the temperature, and shorter swimming sessions tend to be more comfortable than extended water activities.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Select a Month of Interest
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Cork's climate page.
Cork, monthly averages in September
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.





Select a Month of Interest
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Cork's climate page.
So, what should you wear in this month?
For visitors traveling to Cork, 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. With a water temperature of around 15°C there is no need to bring your swimwear.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in Cork.
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.