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Hourly Forecast
Daylight Hours
06:57
Sunrise
19:19
Sunset
Moon
Waxing Crescent
12:16
Moonrise
20:29
Moonset
Daily Forecast
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Wednesday
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Air Quality Data Available
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UV Index
Humidity
Weather in Llantwit Major today, September 15, 2026
Llantwit Major is set for a fine, sunny day on September 15, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside. Cloud leads the morning, peaking close to 68% near 11:00. Sunshine has little room until later in the day.
Temperatures climb from an overnight low near 14°C toward a daytime high of about 19°C. Moisture in the air spans 70%-91%, with the highest values around 23:00. Expect gentle winds, highest near 13:00 at 8.0 km/h.
Afternoon skies stay clogged, peaking close to 77% near 14:00. The grey theme continues rather than clearing out. Visibility holds near 30.7 km, though it can fall to 19.2 km. Sunrise is at 06:57 and sunset at 19:19, giving 12 hours 22 minutes of sunlight today.
Taken together, settled sunshine in Llantwit Major on September 15, 2026 makes outdoor timing easier, with highs near 19°C.
Frequently asked questions about weather in Llantwit Major
How warm does it get in Llantwit Major?
The warmest month in Llantwit Major is July, with average high temperatures of 20°C. The average temperature during this period is around 17°C.
How cold does it get in Llantwit Major?
The coldest month in Llantwit Major is January, with average low temperatures of 4°C. The average temperature during this period is around 6°C.
What is the wettest time of year in Llantwit Major?
The wettest month in Llantwit Major is December, with an average of 138mm of precipitation.
What is the driest time of year in Llantwit Major?
The driest month in Llantwit Major is April, with an average of 65mm of precipitation.
