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Hourly Forecast
Daylight Hours
06:58
Sunrise
19:16
Sunset
Moon
Waxing Crescent
13:32
Moonrise
20:54
Moonset
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Weather in Llantrisant today, September 16, 2026
Rain features in Llantrisant on September 16, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Expect a grey start, with morning cloud around 85% by 10:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 17°C and cools toward 11°C. The air stays humid, with relative humidity between 66% and 87% and the peak around 21:00. A lighter breeze peaks around 16:00 near 5.4 km/h.
The second half of the day still looks unsettled, with rain probability around 28% by 23:00. Dense cloud near 100% at 15:00 keeps the feel grey. Horizontal visibility sits around 34.5 km, briefly nearer 25.1 km. Daylight runs from 06:58 to 19:16, lasting 12 hours 18 minutes of sunlight today.
Taken together, Llantrisant looks wet enough on September 16, 2026 that flexible outdoor plans work best, with temperatures peaking near 17°C.
Frequently asked questions about weather in Llantrisant
How warm does it get in Llantrisant?
The warmest month in Llantrisant 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 Llantrisant?
The coldest month in Llantrisant is January, with average low temperatures of 3°C. The average temperature during this period is around 6°C.
What is the wettest time of year in Llantrisant?
The wettest month in Llantrisant is October, with an average of 124mm of precipitation.
What is the driest time of year in Llantrisant?
The driest month in Llantrisant is April, with an average of 63mm of precipitation.
