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
Weather in January
Temperature
Alltwen's coldest period falls in January and February, when the average high-temperatures ascend to 7.3°C (45.1°F).Humidity
January and December, with an average relative humidity of 87%, are the most humid months in Alltwen, United Kingdom.Rainfall
In Alltwen, in January, during 16.1 rainfall days, 48mm (1.89") of precipitation is typically accumulated. In Alltwen, during the entire year, the rain falls for 181.3 days and collects up to 568mm (22.36") of precipitation.Snowfall
Months with snowfall in Alltwen are January through March and December. January is the month with the most snowfall. Snow falls for 2 days and accumulates 12mm (0.47") of snow.Daylight
In Alltwen, the average length of the day in January is 8h and 25min.On the first day of January in Alltwen, sunrise is at 8:21 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 5:01 pm GMT.
Sunshine
January has the least sunshine of the year, with an average of 3.7h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 2 during January translates into the following guidance:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What time of the year is the coldest in Alltwen?
What is the temperature in January in Alltwen?
What is the most humid month in Alltwen?
What is the average humidity in January in Alltwen?
How many days does it rain in January in Alltwen?
When does it snow the most in Alltwen?
How many days does it snow in January in Alltwen?
What is the average length of the day in January in Alltwen?
When are sunrise and sunset in January in Alltwen?
What is the month with the least sunshine in Alltwen?
How many hours of sunshine does Alltwen have in January?
When is the lowest UV index in Alltwen?
How high is the UV index in January in Alltwen?
Average temperature in January
Alltwen, United Kingdom
- Average high temperature in January: 7.3°C
The warmest month (with the highest average high temperature) is July (18.2°C).
The months with the lowest average high temperature are January and February (7.3°C).
- Average low temperature in January: 3.9°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.8°C).
Average pressure in January
Alltwen, United Kingdom
- Average pressure in January: 1013.7mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in January
Alltwen, United Kingdom
- Average wind speed in January: 21.9km/h
The windiest month (with the highest average wind speed) is December (22.4km/h).
The calmest month (with the lowest average wind speed) is June (14.9km/h).
Average humidity in January
Alltwen, United Kingdom
- Average humidity in January: 87%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is April (81%).
Average rainfall in January
Alltwen, United Kingdom
- Average rainfall in January: 48mm
The wettest months (with the highest rainfall) are November and December (66mm).
The driest month (with the least rainfall) is May (31mm).
Average rainfall days in January
Alltwen, United Kingdom
- Average rainfall days in January: 16.1 days
The month with the highest number of rainy days is November (17 days).
The month with the least rainy days is September (12.6 days).
Average snowfall in January
Alltwen, United Kingdom
- Average snowfall in January: 12mm
The month with the highest snowfall is January (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Alltwen, United Kingdom
- Average snowfall days in January: 2 days
The month with the highest number of snowfall days is January (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Alltwen, 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 month with the most sunshine is May (Average sunshine: 8h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Alltwen, United Kingdom
- Average sunshine days in January: 10.5 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in January
Alltwen, 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
Alltwen, 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 47).
Average visibility in January
Alltwen, 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).
Alltwen, United Kingdom
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