Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The transition from November to December sees average high-temperatures adjusting to a frosty 9.4°C (48.9°F), from a not significantly different 10.4°C (50.7°F). Castlebay reports an average low temperature of 7.5°C (45.5°F) in December, a minor decrease from the day's highs.Humidity
November and December, with an average relative humidity of 75%, are the least humid months in Castlebay, United Kingdom.Rainfall
The month with the most rainfall in Castlebay is December, when the rain falls for 23.4 days and typically aggregates up to 87mm (3.43") of precipitation.Snowfall
March through December are months without snowfall.Daylight
The month with the shortest days is December, with an average of 6h and 54min of daylight.On the first day of December in Castlebay, sunrise is at 8:43 am and sunset at 3:54 pm. On the last day of the month, sunrise is at 9:07 am and sunset at 3:58 pm GMT.
Sunshine
In December, the average sunshine is 2.9h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
What is the temperature in December in Castlebay?
What are the least humid months in Castlebay?
What is the average humidity in December in Castlebay?
What is the rainiest month in Castlebay?
How many days does it rain in December in Castlebay?
When it does not snow in Castlebay?
Does it snow in Castlebay in December?
What is the month with the shortest days in Castlebay?
How many hours of daylight does Castlebay have in December?
When is the sunrise / sunset in December in Castlebay?
How long on average sun shines in December in Castlebay?
When is the lowest UV index in Castlebay?
How high is the UV index in December in Castlebay?
Average temperature in December
Castlebay, United Kingdom
- Average high temperature in December: 9.4°C
The warmest month (with the highest average high temperature) is August (14.5°C).
The months with the lowest average high temperature are February and March (8.2°C).
- Average low temperature in December: 7.5°C
The month with the highest average low temperature is August (13°C).
The coldest month (with the lowest average low temperature) is February (6.3°C).
Average pressure in December
Castlebay, United Kingdom
- Average pressure in December: 1005.1mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is November (1004.9mbar).
Average wind speed in December
Castlebay, United Kingdom
- Average wind speed in December: 41.6km/h
The windiest month (with the highest average wind speed) is January (42.4km/h).
The calmest month (with the lowest average wind speed) is June (23.9km/h).
Average humidity in December
Castlebay, United Kingdom
- Average humidity in December: 75%
The month with the highest relative humidity is July (85%).
The months with the lowest relative humidity are November and December (75%).
Average rainfall in December
Castlebay, United Kingdom
- Average rainfall in December: 87mm
The wettest month (with the highest rainfall) is December (87mm).
The driest month (with the least rainfall) is April (31mm).
Average rainfall days in December
Castlebay, United Kingdom
- Average rainfall days in December: 23.4 days
The month with the highest number of rainy days is January (23.7 days).
The month with the least rainy days is April (15.8 days).
Average snowfall in December
Castlebay, United Kingdom
- Average snowfall in December: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Castlebay, United Kingdom
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are January and February (0.2 days).
The months with the least snowfall days are May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Castlebay, United Kingdom
- Average daylight in December: 6h and 5min
The month with the longest days is June (Average daylight: 17h and 48min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is June (Average sunshine: 8h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Castlebay, United Kingdom
- Average sunshine days in December: 5.4 days
The month with the most sunshine days is April (11.7 days).
The month with the least sunshine days is January (4.7 days).
Average UV index in December
Castlebay, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are May, June, July and September (UV index 4).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Castlebay, United Kingdom
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is April (Cloud cover 54).
Average visibility in December
Castlebay, United Kingdom
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (10km).
The months with the lowest visibility are January and July (9km).
Castlebay, United Kingdom
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