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 arrival of December marks a slight shift to an average high-temperature of a still frosty 6.6°C (43.9°F) from November's 8.5°C (47.3°F). In Harlech, December nights experience a modest descent in temperature from daily peaks, cooling down to an average of 3°C (37.4°F).Humidity
January and December, with an average relative humidity of 91%, are the most humid months.Rainfall
The month with the most rainfall in Harlech is December, when the rain falls for 20.8 days and typically aggregates up to 103mm (4.06") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Harlech, in December, during 3.9 snowfall days, 46mm (1.81") of snow is typically accumulated. Throughout the year, in Harlech, United Kingdom, there are 22.5 snowfall days, and 260mm (10.24") of snow is accumulated.Daylight
With an average of 7h and 42min of daylight, December has the shortest days of the year.On the first day of December in Harlech, United Kingdom, sunrise is at 8:06 am and sunset at 4:04 pm. On the last day of the month, sunrise is at 8:28 am and sunset at 4:10 pm GMT.
Sunshine
With an average of 2.5h of sunshine, December has the least sunshine of the year in Harlech.UV index
The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 translates into these guidelines:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
Is December cold in Harlech?
What are the most humid months in Harlech?
What is the average humidity in December in Harlech?
What is the wettest month in Harlech?
How many days does it rain in December in Harlech?
How much does it snow in Harlech in December?
What is the month with the shortest days in Harlech?
What is the average length of the day in December in Harlech?
When are sunrise and sunset in December in Harlech?
What is the month with the least sunshine in Harlech?
How many hours of sunshine does Harlech have in December?
What is the month with the lowest UV index in Harlech?
What is the UV index intensity in December in Harlech?
Average temperature in December
Harlech, United Kingdom
- Average high temperature in December: 6.6°C
The warmest month (with the highest average high temperature) is July (17.2°C).
The month with the lowest average high temperature is January (5.6°C).
- Average low temperature in December: 3°C
The month with the highest average low temperature is August (10.6°C).
The coldest month (with the lowest average low temperature) is February (1.5°C).
Average pressure in December
Harlech, United Kingdom
- Average pressure in December: 1012.3mbar
The month with the highest atmospheric pressure is May (1016.3mbar).
The month with the lowest atmospheric pressure is November (1009.1mbar).
Average wind speed in December
Harlech, United Kingdom
- Average wind speed in December: 17.8km/h
The windiest month (with the highest average wind speed) is December (17.8km/h).
The calmest month (with the lowest average wind speed) is June (11.2km/h).
Average humidity in December
Harlech, United Kingdom
- Average humidity in December: 91%
The months with the highest relative humidity are January and December (91%).
The months with the lowest relative humidity are April and May (84%).
Average rainfall in December
Harlech, United Kingdom
- Average rainfall in December: 103mm
The wettest month (with the highest rainfall) is December (103mm).
The driest months (with the least rainfall) are April and May (52mm).
Average rainfall days in December
Harlech, United Kingdom
- Average rainfall days in December: 20.8 days
The month with the highest number of rainy days is August (22.4 days).
The month with the least rainy days is February (15.3 days).
Average snowfall in December
Harlech, United Kingdom
- Average snowfall in December: 46mm
The month with the highest snowfall is January (70mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Harlech, United Kingdom
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harlech, United Kingdom
- Average daylight in December: 7h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in December: 2h and 3min
The months with the most sunshine are May and June (Average sunshine: 6h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in December
Harlech, United Kingdom
- Average sunshine days in December: 6.5 days
The month with the most sunshine days is March (10.8 days).
The month with the least sunshine days is August (5.9 days).
Average UV index in December
Harlech, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are May, June and August (UV index 4).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).
Average cloud cover in December
Harlech, United Kingdom
- Average cloud cover in December: 76
The month with the most cloud cover is December (Cloud cover 76).
The month with the least cloud cover is April (Cloud cover 60).
Average visibility in December
Harlech, United Kingdom
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (8km).
The months with the lowest visibility are August and September (7km).
Harlech, United Kingdom
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