Best year time to visit Llanelli

General weather information about Llanelli

Average annual temperature is 11.6 °C

Absolute maximum temperature: 28.0 °C

Absolute minimum temperature: -3.4 °C

Number of sunny days: 94 days

Number of rainy days: 271 days

Look at detailed online map of Llanelli

* Weather data for Llanelli United Kingdom is based on climate observations for 2026 year

Llanelli air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.312.714.016.222.128.023.723.827.220.314.312.8
Average daytime temperature (°C)8.49.510.012.617.722.318.419.020.215.310.910.2
Average temperature (°C)5.96.67.59.113.317.815.816.117.012.98.48.4
Average night temperature (°C)3.33.65.05.48.713.112.813.113.610.75.96.2
Absolute minimum temperature (°C)-3.0-0.9-1.01.36.07.49.28.75.74.0-3.0-3.4

Llanelli monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.016.016.016.015.013.011.09.08.0
Daylight mean duration (h)8.410.011.913.915.616.616.114.612.710.78.97.9
Daylight minimum duration (h)7.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)3.64.64.87.711.511.99.38.77.44.44.42.5
Precipitation (mm)21134265926671250154156209157309
Sunny days1212391712107696
Rainy days191628211418303123252125
Snow days000000000000

Llanelli - weather forecast by months

Llanelli weather in januaryLlanelli weather in februaryLlanelli weather in marchLlanelli weather in aprilLlanelli weather in mayLlanelli weather in juneLlanelli weather in julyLlanelli weather in augustLlanelli weather in septemberLlanelli weather in octoberLlanelli weather in novemberLlanelli weather in december

Best time to visit Llanelli:

The best time to visit Llanelli during the most sunny months:

  • May — 11.5(h)
  • June — 11.9(h)
  • July — 9.3(h)
  • August — 8.7(h)

Months with the longest average daylight duration in Llanelli:

  • May — 15.6(h)
  • June — 16.6(h)
  • July — 16.1(h)

The largest precipitation sum in Llanelli is at

  • January — 211(mm)
  • March — 265(mm)
  • July — 250(mm)
  • October — 209(mm)
  • December — 309(mm)

    • Weather forecast in the closest to Llanelli admin centers

    Weather forecast in the closest towns to Llanelli

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    Frequently asked questions

    When is the best time to visit Llanelli?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Llanelli.
    What is the weather like in Llanelli?
    See average temperature, rainfall and daylight hours for Llanelli by month in the table above.
    How many sunny days does Llanelli have?
    The monthly weather statistics above show sunshine and rainfall patterns for Llanelli throughout the year.