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 is January, when temperatures fluctuate between an average 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 in Radyr is 85%.Rainfall
In January, in Radyr, the rain falls for 11.3 days. Throughout January, 16mm (0.63") of precipitation is accumulated. Throughout the year, there are 132.6 rainfall days, and 252mm (9.92") of precipitation is accumulated.Snowfall
Months with snowfall in Radyr, United Kingdom, are January, February, November and December. In Radyr, during January, snow falls for 0.8 days and regularly aggregates up to 1mm (0.04") of snow. In Radyr, during the entire year, snow falls for 3.1 days and aggregates up to 8mm (0.31") of snow.Daylight
The average length of the day in January is 8h and 27min.On the first day of January, sunrise is at 8:18 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:59 pm GMT.
Sunshine
The average sunshine in January in Radyr is 4.1h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 2 in January translates into this advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Radyr?
What is the usual temperature for Radyr in January?
What is the average humidity in January in Radyr?
How many days does it rain in January in Radyr?
How many days does it snow in January in Radyr?
What is the average length of the day in January in Radyr?
What time are sunrise and sunset in January in Radyr?
How many hours of sunshine does Radyr have in January?
What are the months with the lowest UV index in Radyr?
What is the UV index reading in January in Radyr?
Average temperature in January
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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
Radyr, 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).
