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.