Valentia Island weather in September (Kerry, Ireland)

What can you expect from the weather in Valentia Island during September? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In September, Valentia Island generally has moderate temperatures and high rainfall. Throughout the daytime, temperatures often hover around 17°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 12°C.

Valentia Island in September usually receives high rainfall, averaging around 120 mm for the month. Rain is expected on roughly 20 days.

The city usually sees around 118 hours of sunlight, indicating a moderately sunny period.

If your ideal day consists of dry skies and moderate temperatures May, June, July and August generally stand out with the best circumstances. While January, February, March, April, November and December tend to showcase less optimal conditions.

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

 

Valentia Island, monthly averages in September

Min Temperature 12°C  

Max Temperature 17°C  

Water Temperature 15°C *  

Chance of Rain 67%  

Precipitation 120 mm  

Rainy days 20 days  

Humidity 77% *  

Windspeed 18 km/h *  

Sunshine 118 hours *  

Percentage Sunshine 30% *  

* Data from: Valentia, Ireland (6 KM, 3 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 Valentia Island in September?

For visitors traveling to Valentia Island, 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 in September.

Swimming

6/10

Cycling

5/10

Walking

5/10

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

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

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.