Llandeilo Weather in September

September in Llandeilo sees daytime temperatures around 18°C (64°F) and lows of 10°C (50°F) at night. With around 102 mm (4 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Llandeilo in September

Historically, the month has about 16 days of rain, averaging 102 mm (4 in) in total. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.

Temperature in Llandeilo in September

Daytime highs in Llandeilo in September reach 18°C (64°F), with nights around 10°C (50°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to around 10°C (50°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Llandeilo in September

The area enjoys a moderate level of sunlight, with around 149 hours. It's a good balance between sunny and cloudy days.

If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Llandeilo.

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• January
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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Llandeilo's climate page.

Llandeilo Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 54%  

Precipitation 102 mm (4 in)  

Rainy days 16 days  

Humidity 81% *  

Sunshine 149 hours *  

Percentage Sunshine 37% *  

* Data from: Cardiff, the United Kingdom (69 KM, 43 Miles).

What to Wear in Llandeilo in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Llandeilo in September

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

Swimming

6/10

Cycling

5/10

Walking

5/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Llandeilo's climate page.

More climate data for Llandeilo

Temperature Rainfall Sunshine Humidity

See the full Llandeilo climate overview or explore weather in the United Kingdom.