Llantrisant weather in September (Glamorgan, United Kingdom)

What should you pack for a trip to Llantrisant in September? Use this page to get an overview of the month’s weather conditions.

Temperatures

The month of September in Llantrisant typically brings pleasant temperatures and moderate rainfall. The daytime often sees temperatures reaching 18°C, but nighttime brings a cool-down to 11°C.

Precipitation

Llantrisant in September usually receives moderate rainfall, averaging around 88 mm for the month. Expect around 16 days of rain based on historical data.

Average sunshine

The area enjoys a balanced 149 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Should you favor a climate that's both dry and comfortably warm July and August typically offer the most agreeable circumstances. On the other hand, January, February, November and December tend to be characterized by conditions that may not be as optimal.

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

 

Llantrisant, monthly averages in September

Min Temperature 11°C  

Max Temperature 18°C  

Water Temperature 15°C *  

Chance of Rain 53%  

Precipitation 88 mm  

Rainy days 16 days  

Humidity 81% *  

Windspeed 14 km/h *  

Sunshine 149 hours *  

Percentage Sunshine 37% *  

Data from: Cardiff, the United Kingdom (15 KM, 9 Miles).

Where to go in the United Kingdom in September

Find out more about the weather in the United Kingdom and which places have the best travel 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 this month?

For visitors traveling to Llantrisant, 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.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

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

Our site offers climate and forecast data for every country in the world. Are you going to the United Kingdom? On this website you can find historical weather averages for many cities in the United Kingdom. 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.