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 months of January and February are noted for their lowest temperatures, with an average high-temperature of 7.3°C (45.1°F).Humidity
January and December, with an average relative humidity of 87%, are the most humid months.Rainfall
In Onllwyn, United Kingdom, in January, during 16.1 rainfall days, 48mm (1.89") of precipitation is typically accumulated. Throughout the year, there are 181.3 rainfall days, and 568mm (22.36") of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. The month with the most snowfall is January, when snow falls for 2 days and typically aggregates up to 12mm (0.47") of snow.Daylight
The average length of the day in January is 8h and 25min.On the first day of the month, sunrise is at 8:21 am and sunset at 4:14 pm. On the last day of January, sunrise is at 7:55 am and sunset at 5:00 pm GMT.
Sunshine
The month with the least sunshine in Onllwyn is January, with an average of 3.7h of sunshine.UV index
The months with the lowest UV index in Onllwyn are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In January, an average UV index of 2 transforms into the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Onllwyn?
What is the average January temperature in Onllwyn?
What is the most humid month in Onllwyn?
What is the average humidity in January in Onllwyn?
How much does it rain in Onllwyn in January?
What is the snowiest month in Onllwyn?
How many days does it snow in January in Onllwyn?
How many hours of daylight does Onllwyn have in January?
When is the sunrise / sunset in January in Onllwyn?
What is the month with the least sunshine in Onllwyn?
How many hours of sunshine does Onllwyn have in January?
What are the months with the lowest UV index in Onllwyn?
What is the UV index reading in January in Onllwyn?
Average temperature in January
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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
Onllwyn, 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).
