Castlerea weather in September (Roscommon County, Ireland)

What can you expect from the weather in Castlerea during September? This guide provides all the details you need.

In September, Castlerea generally has moderate temperatures and moderate rainfall. Anticipate daytime temperatures around 18°C, while night temperatures can drop to 10°C.

Castlerea in September usually receives moderate rainfall, averaging around 87 mm for the month. Rain is expected on roughly 20 days.

The area experiences limited sunny days, amounting to roughly 93 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days

So this is a great month to visit if you prefer dry days with pleasant temperatures. June, July and September typically offer the most optimal weather. In contrast, January, February, November and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Castlerea climate page with graphs.

 

Castlerea, monthly averages in September

Min Temperature 10°C  

Max Temperature 18°C  

Chance of Rain 67%  

Precipitation 87 mm  

Rainy days 20 days  

Humidity 83% *  

Sunshine 93 hours *  

Percentage Sunshine 26% *  

* Data from: Claremorris, Ireland (33 KM, 20 Miles).

Where to go in Ireland in September

Find out more about the weather in Ireland in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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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).

So, what should you wear in Castlerea in September?

For visitors traveling to Castlerea, 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.

What To Do

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

Swimming

4/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Castlerea.

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 climate conditions. Find out where to go with our weather planner.