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
The beginning of January reveals an average high-temperature of a still frosty 7.2°C (45°F), showing minimal deviation from the previous month. Castlewellan, during the nights of January, averages a temperature close to its daytime high, at a cold 4.3°C (39.7°F).Humidity
In Castlewellan, the average relative humidity in January is 85%.Rainfall
In Castlewellan, in January, during 14.7 rainfall days, 34mm (1.34") of precipitation is typically accumulated. Throughout the year, in Castlewellan, there are 181.5 rainfall days, and 542mm (21.34") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. The month with the most snowfall in Castlewellan is January, when snow falls for 1.5 days and typically aggregates up to 9mm (0.35") of snow.Daylight
In Castlewellan, the average length of the day in January is 8h and 2min.On the first day of January, sunrise is at 8:44 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 8:13 am and sunset at 5:00 pm GMT.
Sunshine
The months with the least sunshine in Castlewellan are January and February, with an average of 3.9h of sunshine.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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: An average UV index of 2 in January transforms into this advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What is the temperature in January in Castlewellan?
What is the average humidity in January in Castlewellan?
How many days does it rain in January in Castlewellan?
When does it snow the most in Castlewellan?
How many days does it snow in January in Castlewellan?
What is the average length of the day in January in Castlewellan?
What time are sunrise and sunset in January in Castlewellan?
What is the month with the least sunshine in Castlewellan?
How long on average sun shines in January in Castlewellan?
When is the lowest UV index in Castlewellan?
What is the UV index intensity in January in Castlewellan?
Average temperature in January
Castlewellan, United Kingdom
- Average high temperature in January: 7.2°C
The warmest months (with the highest average high temperature) are July and August (16.6°C).
The month with the lowest average high temperature is February (7.1°C).
- Average low temperature in January: 4.3°C
The months with the highest average low temperature are July and August (12.1°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in January
Castlewellan, United Kingdom
- Average pressure in January: 1010.5mbar
The month with the highest atmospheric pressure is May (1015.7mbar).
The month with the lowest atmospheric pressure is November (1007.6mbar).
Average wind speed in January
Castlewellan, United Kingdom
- Average wind speed in January: 24.3km/h
The windiest month (with the highest average wind speed) is December (24.4km/h).
The calmest month (with the lowest average wind speed) is July (15km/h).
Average humidity in January
Castlewellan, United Kingdom
- Average humidity in January: 85%
The month with the highest relative humidity is August (87%).
The months with the lowest relative humidity are March, April and May (83%).
Average rainfall in January
Castlewellan, United Kingdom
- Average rainfall in January: 34mm
The wettest month (with the highest rainfall) is November (68mm).
The driest month (with the least rainfall) is May (32mm).
Average rainfall days in January
Castlewellan, United Kingdom
- Average rainfall days in January: 14.7 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is September (11.5 days).
Average snowfall in January
Castlewellan, United Kingdom
- Average snowfall in January: 9mm
The month with the highest snowfall is January (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in January
Castlewellan, United Kingdom
- Average snowfall days in January: 1.5 days
The month with the highest number of snowfall days is February (2 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
Castlewellan, United Kingdom
- Average daylight in January: 8h and 0min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is June (Average sunshine: 7h and 48min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days in January
Castlewellan, United Kingdom
- Average sunshine days in January: 14.5 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in January
Castlewellan, United Kingdom
- Average UV index in January: 2
The months with the highest UV index are June, 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
Castlewellan, United Kingdom
- Average cloud cover in January: 60
The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 51).
Average visibility in January
Castlewellan, United Kingdom
- Average visibility in January: 9km
The months with the highest visibility are February, March, September, October, November and December (10km).
The months with the lowest visibility are January, April, May, June, July and August (9km).
Castlewellan, United Kingdom
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