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Hourly Forecast
Daylight Hours
07:01
Sunrise
19:19
Sunset
Moon
Waxing Crescent
13:36
Moonrise
20:56
Moonset
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Weather in Llanelli today, September 16, 2026
Llanelli starts September 16, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Cloud leads the morning, peaking close to 69% near 10:00. Sunshine has little room until later in the day.
Expect highs of 16°C and cooler readings close to 13°C. Expect humidity between 68% and 83%, most humid near 09:00. Winds stay light, near 5.6 km/h by 22:00, so the day feels still more than breezy.
The afternoon keeps an overcast feel, as cloud reaches about 100% around 19:00. Outdoor plans may still want a flexible backup. Expect visibility near 35.4 km, with poorer spells close to 30.0 km. Sunrise is at 07:01 and sunset at 19:19, giving 12 hours 18 minutes of sunlight today.
The practical takeaway for Llanelli on September 16, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 16°C.
Frequently asked questions about weather in Llanelli
How warm does it get in Llanelli?
The warmest month in Llanelli is July, with average high temperatures of 19°C. The average temperature during this period is around 16°C.
How cold does it get in Llanelli?
The coldest month in Llanelli 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 Llanelli?
The wettest month in Llanelli is December, with an average of 173mm of precipitation.
What is the driest time of year in Llanelli?
The driest month in Llanelli is April, with an average of 73mm of precipitation.
