Llanelli weather in September (Dyfed, United Kingdom)

What weather conditions can you expect in Llanelli this September? See what weather conditions to anticipate this month with our guide.

Temperatures

September in Llanelli generally includes pleasant temperatures and high rainfall. The summer season takes place during September. During the daylight hours, temperatures often reach 18°C. After dark they usually decrease to around 12°C.

Precipitation

Llanelli in September usually receives high rainfall, averaging around 108 mm for the month. Typically around 16 days days of rainfall are expected.

Average sunshine

Expect a moderate amount of sunlight, with approximately 149 hours. This means a pleasant mix of sun and clouds.

If you prefer dry days with pleasant temperatures, June and July typically offer the best circumstances. While January, February, November and December tend to showcase less optimal conditions.

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

 

Llanelli, monthly averages in September

Min Temperature 12°C  

Max Temperature 18°C  

Chance of Rain 53%  

Precipitation 108 mm  

Rainy days 16 days  

Humidity 81% *  

Sunshine 149 hours *  

Percentage Sunshine 37% *  

* Data from: Cardiff, the United Kingdom (63 KM, 39 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 Llanelli, 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.

Swimming

6/10

Cycling

9/10

Walking

9/10

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 Llanelli.

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.