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WalesThe climate of Llanelli
The current climate in Llanelli features temperatures ranging from a high of 20°C to a low of 9°C throughout the year. The average yearly temperature is around 15°C. At night, temperatures in the colder months average around 5°C and in the warmer months around 14°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Llanelli, Wales.
Temperature records
The highest temperature recorded in Llanelli in recent years was 31°C in August 2022. The lowest daytime temperature recorded was -1°C in March 2018.
Precipitation and snowfall
On average, Llanelli gets 999 mm of precipitation each year. Of this, about 1,9 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Llanelli?
The best time to visit Llanelli for sunny weather is June through September. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Llanelli. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Llanelli
The climate table of Llanelli shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 9 | 9 | 10 | 13 | 16 | 19 | 20 | 20 | 18 | 15 | 12 | 10 |
| Temp. min (°C) | 5 | 5 | 6 | 7 | 10 | 12 | 15 | 15 | 14 | 11 | 8 | 7 |
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| Precipitation (mm) | 114 | 85 | 77 | 42 | 51 | 63 | 62 | 84 | 76 | 111 | 113 | 121 |
| Snow (cm) | 0,3 | 0,2 | 0,5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,9 |
| UV Index | 1 | 3 | 4 | 5 | 6 | 7 | 7 | 6 | 4 | 3 | 2 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Llanelli, Wales. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Llanelli
Yearly Temperature in Llanelli
Precipitation charts
These charts show the average amount of precipitation in Llanelli, Wales. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Llanelli
Total Yearly Precipitation in Llanelli
Average Snowfall per Month in Llanelli
Total Yearly Snowfall in Llanelli
UV index chart
This chart shows the average UV index per month in Llanelli, Wales. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Llanelli
Weather experiences in Llanelli
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Average weather in Llanelli by month
Click on a month below to see detailed weather info for Llanelli. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.