Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
The advent of January reveals an average high-temperature of a still chilly 7.8°C (46°F), showing minimal difference from the prior month. During January, the nighttime temperatures align closely with the daytime averages, measuring a wintry 4.7°C (40.5°F).Humidity
The months with the highest humidity are January, August, October through December, with an average relative humidity of 85%.Rainfall
In January, in Llanelli, the rain falls for 20.1 days. Throughout January, 72mm (2.83") of precipitation is accumulated. Throughout the year, there are 219.6 rainfall days, and 745mm (29.33") of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. In January, it is snowing for 1.3 days. Throughout January, 5mm (0.2") of snow is accumulated. Throughout the year, in Llanelli, United Kingdom, there are 3.9 snowfall days, and 20mm (0.79") of snow is accumulated.Sea temperature
In Llanelli, United Kingdom, the average seawater temperature in January is 8.8°C (47.8°F).Note: While a brief time in 8.8°C (47.8°F) at 13°C (55.4°F) is already bracing, plunging below 10°C (50°F) can severely affect breathing and introduce a cold shock, relying on your physical state.
Daylight
In Llanelli, the average length of the day in January is 8h and 25min.On the first day of the month, sunrise is at 8:23 am and sunset at 4:16 pm. On the last day of January, sunrise is at 7:57 am and sunset at 5:02 pm GMT.
Sunshine
With an average of 3.7h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 2 during January translates into the following directions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature in Llanelli?
What are the most humid months in Llanelli?
What is the average humidity in January in Llanelli?
How much does it rain in Llanelli in January?
How much does it snow in Llanelli in January?
What is the water temperature in January in Llanelli?
How many hours of daylight does Llanelli have in January?
When are sunrise and sunset in January in Llanelli?
What is the month with the least sunshine in Llanelli?
How many hours of sunshine does Llanelli have in January?
What are the months with the lowest UV index in Llanelli?
How high is the UV index in January in Llanelli?
Average temperature in January
Llanelli, United Kingdom
- Average high temperature in January: 7.8°C
The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is February (7.7°C).
- Average low temperature in January: 4.7°C
The month with the highest average low temperature is August (13.6°C).
The coldest month (with the lowest average low temperature) is February (4.5°C).
Average pressure in January
Llanelli, United Kingdom
- Average pressure in January: 1013.7mbar
The month with the highest atmospheric pressure is May (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.7mbar).
Average wind speed in January
Llanelli, United Kingdom
- Average wind speed in January: 23km/h
The windiest month (with the highest average wind speed) is December (23.9km/h).
The calmest month (with the lowest average wind speed) is June (15.4km/h).
Average humidity in January
Llanelli, United Kingdom
- Average humidity in January: 85%
The months with the highest relative humidity are January, August, October, November and December (85%).
The month with the lowest relative humidity is April (81%).
Average rainfall in January
Llanelli, United Kingdom
- Average rainfall in January: 72mm
The wettest month (with the highest rainfall) is December (84mm).
The driest month (with the least rainfall) is May (37mm).
Average rainfall days in January
Llanelli, United Kingdom
- Average rainfall days in January: 20.1 days
The month with the highest number of rainy days is December (21.5 days).
The month with the least rainy days is April (15.1 days).
Average snowfall in January
Llanelli, United Kingdom
- Average snowfall in January: 5mm
The month with the highest snowfall is December (8mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Llanelli, United Kingdom
- Average snowfall days in January: 1.3 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in January
Llanelli, United Kingdom
- Average sea temperature in January: 8.8°C
The best month for swimming (with the highest average sea temperature) is August (16.8°C).
The coldest month (with the lowest average sea temperature) is March (8.3°C).
Average daylight in January /
Average sunshine in January
Llanelli, United Kingdom
- Average daylight in January: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in January: 3h and 4min
The months with the most sunshine are April and May (Average sunshine: 8h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Llanelli, United Kingdom
- Average sunshine days in January: 7.8 days
The month with the most sunshine days is May (12.8 days).
The month with the least sunshine days is August (6.5 days).
Average UV index in January
Llanelli, United Kingdom
- Average UV index in January: 2
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Llanelli, United Kingdom
- Average cloud cover in January: 62
The month with the most cloud cover is December (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 46).
Average visibility in January
Llanelli, United Kingdom
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
