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Llanelli Climate by Month

Temperatures see a moderate degree of fluctuation, transitioning from pleasant conditions to cold. It is also known for its large amounts of rainfall. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

In Llanelli, seasonal changes bring about a moderate variation in temperatures. Typically, daytime temperatures range from a pleasant 19°C in August to a chilly 9°C in the coolest month, February. Nights are cooler, with temperatures generally dropping to 4°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Llanelli is known for its substantial rainfall, with annual precipitation reaching 1377 mm. Llanelli offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between October (152 mm) and April (83 mm) is not too significant, making the climate enjoyable for visitors and residents alike.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, Llanelli serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 6.7 hours of sunshine daily, and embrace the darker days in December, offering only 1.6 hours of daily sunlight.

Monthly hours of sunshine

Data from: Cardiff, the United Kingdom (63 KM, 39 Miles).

Daily hours of sunshine

Data from: Cardiff, the United Kingdom (63 KM, 39 Miles).

The best time of year to visit Llanelli in the United Kingdom

Other facts from our historical weather data:
  • Which months have the greatest rainfall in Llanelli?
    Most rainfall (rainy season) is seen in October, November and December.
  • Which is the warmest month in Llanelli?
    August has an average maximum temperature of 19°C and is the warmest month of the year.
  • Which is the coldest month in Llanelli?
    The coldest month is February with an average maximum temperature of 9°C.
  • Which is the wettest month in Llanelli?
    October tops the wettest month list with 152 mm of rainfall.
  • Which is the driest month in Llanelli?
    April is the driest month with 83 mm of precipitation.
  • Which is the sunniest month in Llanelli?
    July is the sunniest month with an average of 202 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Llanelli

    Wed   Dec 11
    6°C | 1°C
    E 18 km/h
    broken clouds and no rain

    broken clouds and no rain

    Thu   Dec 12
    8°C | 3°C
    E 14 km/h
    broken clouds and no rain

    broken clouds and no rain

    Fri   Dec 13
    8°C | 5°C
    E 11 km/h
    1.9 mm
    overcast and  chance of slight rain

    overcast and chance of slight rain