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 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 coldest period tends to be January, when average temperatures fluctuate between a high of 7.5°C (45.5°F) and a low of 4.1°C (39.4°F).Humidity
In January, the average relative humidity is 85%.Rainfall
In Llanishen, United Kingdom, in January, during 11.3 rainfall days, 16mm (0.63") of precipitation is typically accumulated. Throughout the year, in Llanishen, there are 132.6 rainfall days, and 252mm (9.92") of precipitation is accumulated.Snowfall
January, February, November and December are months with snowfall. In January, it is snowing for 0.8 days. Throughout January, 1mm (0.04") of snow is accumulated. Throughout the year, in Llanishen, United Kingdom, there are 3.1 snowfall days, and 8mm (0.31") of snow is accumulated.Daylight
In January, the average length of the day is 8h and 26min.On the first day of January, sunrise is at 8:18 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:59 pm GMT.
Sunshine
In January, the average sunshine is 4.1h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 2 during January translates into the following directions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Llanishen?
What are January temperatures in Llanishen?
What is the average humidity in January in Llanishen?
How many days does it rain in January in Llanishen?
How many days does it snow in January in Llanishen?
What is the average length of the day in January in Llanishen?
When are sunrise and sunset in January in Llanishen?
How long on average sun shines in January in Llanishen?
When is the lowest UV index in Llanishen?
How high is the UV index in January in Llanishen?
Average temperature in January
Llanishen, United Kingdom
- Average high temperature in January: 7.5°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is January (7.5°C).
- Average low temperature in January: 4.1°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in January
Llanishen, United Kingdom
- Average pressure in January: 1014mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in January
Llanishen, United Kingdom
- Average wind speed in January: 21.6km/h
The windiest month (with the highest average wind speed) is February (22.3km/h).
The calmest months (with the lowest average wind speed) are June and July (15.2km/h).
Average humidity in January
Llanishen, United Kingdom
- Average humidity in January: 85%
The months with the highest relative humidity are November and December (86%).
The months with the lowest relative humidity are April and May (81%).
Average rainfall in January
Llanishen, United Kingdom
- Average rainfall in January: 16mm
The wettest months (with the highest rainfall) are August and November (31mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in January
Llanishen, United Kingdom
- Average rainfall days in January: 11.3 days
The month with the highest number of rainy days is November (13.5 days).
The months with the least rainy days are February and April (9.1 days).
Average snowfall in January
Llanishen, United Kingdom
- Average snowfall in January: 1mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in January
Llanishen, United Kingdom
- Average snowfall days in January: 0.8 days
The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Llanishen, 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: 4h and 1min
The month with the most sunshine is May (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).
Average sunshine days in January
Llanishen, United Kingdom
- Average sunshine days in January: 15.4 days
The month with the most sunshine days is April (19.2 days).
The month with the least sunshine days is November (13.7 days).
Average UV index in January
Llanishen, 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, March, November and December (UV index 2).
Average cloud cover in January
Llanishen, United Kingdom
- Average cloud cover in January: 58
The month with the most cloud cover is November (Cloud cover 61).
The months with the least cloud cover are April and May (Cloud cover 46).
Average visibility in January
Llanishen, United Kingdom
- Average visibility in January: 9km
The months with the highest visibility are February, March and December (10km).
The months with the lowest visibility are January, April, May, June, July, August, September, October and November (9km).
