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 sea temperature 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
December
Weather in December
Temperature
The initiation of December sees an average high-temperature of a frosty 7.9°C (46.2°F), showing minor variations from the previous month. During the nights of December, Mostyn records an average temperature of 5°C (41°F), a minor drop from daytime peaks.Humidity
The months with the highest humidity in Mostyn are January, November and December, with an average relative humidity of 84%.Rainfall
In Mostyn, during December, the rain falls for 19.8 days and regularly aggregates up to 63mm (2.48") of precipitation. In Mostyn, during the entire year, the rain falls for 225.2 days and collects up to 669mm (26.34") of precipitation.Snowfall
Months with snowfall in Mostyn are January through April and December. December is the first month it typically snows. Throughout December, in the average 1.8 snowfall days, it receives 15mm (0.59") of snow. Throughout the year, there are 9.8 snowfall days, and 60mm (2.36") of snow is accumulated.Sea temperature
In December, the average sea temperature is 9.7°C (49.5°F).Note: Unprotected swimming in 9.7°C (49.5°F) is dangerous due to potential cold shock. Especially when temperatures go below 10°C (50°F), leading to hyperventilation.
Daylight
The month with the shortest days in Mostyn, United Kingdom, is December, with an average of 7h and 36min of daylight.On the first day of the month, sunrise is at 8:05 am and sunset at 3:58 pm. On the last day of December, sunrise is at 8:28 am and sunset at 4:04 pm GMT.
Sunshine
The average sunshine in December is 4.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 2 in December leads to these guidelines:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Experience reduced UV exposure by about half when donning a wide-brim hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Mostyn?
What are the most humid months in Mostyn?
What is the average humidity in December in Mostyn?
How much does it rain in Mostyn in December?
When does it start snowing in Mostyn?
What is the water temperature in December in Mostyn?
What is the month with the shortest days in Mostyn?
How many hours of daylight does Mostyn have in December?
What time are sunrise and sunset in December in Mostyn?
How many hours of sunshine does Mostyn have in December?
When is the lowest UV index in Mostyn?
What is the UV index intensity in December in Mostyn?
Average temperature in December
Mostyn, United Kingdom
- Average high temperature in December: 7.9°C
The warmest month (with the highest average high temperature) is July (18.3°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in December: 5°C
The month with the highest average low temperature is August (13.2°C).
The coldest months (with the lowest average low temperature) are January and February (3.6°C).
Average pressure in December
Mostyn, United Kingdom
- Average pressure in December: 1011.8mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.9mbar).
Average wind speed in December
Mostyn, United Kingdom
- Average wind speed in December: 21.1km/h
The windiest months (with the highest average wind speed) are January and December (21.1km/h).
The calmest month (with the lowest average wind speed) is June (13.7km/h).
Average humidity in December
Mostyn, United Kingdom
- Average humidity in December: 84%
The months with the highest relative humidity are January, November and December (84%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in December
Mostyn, United Kingdom
- Average rainfall in December: 63mm
The wettest month (with the highest rainfall) is August (74mm).
The driest month (with the least rainfall) is April (35mm).
Average rainfall days in December
Mostyn, United Kingdom
- Average rainfall days in December: 19.8 days
The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is February (15.3 days).
Average snowfall in December
Mostyn, United Kingdom
- Average snowfall in December: 15mm
The month with the highest snowfall is February (19mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Mostyn, United Kingdom
- Average snowfall days in December: 1.8 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Mostyn, United Kingdom
- Average sea temperature in December: 9.7°C
The best month for swimming (with the highest average sea temperature) is August (16.7°C).
The coldest months (with the lowest average sea temperature) are February and March (7.4°C).
Average daylight in December /
Average sunshine in December
Mostyn, United Kingdom
- Average daylight in December: 7h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are April, May and July (Average sunshine: 7h and 48min).
The month with the least sunshine is November (Average sunshine: 4h and 0min).
Average sunshine days in December
Mostyn, United Kingdom
- Average sunshine days in December: 7.1 days
The month with the most sunshine days is March (11.8 days).
The month with the least sunshine days is August (4.7 days).
Average UV index in December
Mostyn, United Kingdom
- Average UV index in December: 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 December
Mostyn, United Kingdom
- Average cloud cover in December: 60
The months with the most cloud cover are November and December (Cloud cover 60).
The months with the least cloud cover are April and May (Cloud cover 48).
Average visibility in December
Mostyn, United Kingdom
- Average visibility in December: 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).
