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
December
Weather in December
Temperature
The arrival of December marks a slight shift to an average high-temperature of a still chilly 8.5°C (47.3°F) from November's 9.9°C (49.8°F). The December average low temperature, marginally lower than the daytime high, records at an icy 5.8°C (42.4°F).Humidity
The average relative humidity in December is 84%.Rainfall
In December, in Caernarfon, the rain falls for 23.3 days. Throughout December, 86mm (3.39") of precipitation is accumulated. Throughout the year, there are 236.8 rainfall days, and 754mm (29.69") of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Caernarfon. In December, it is snowing for 1.7 days. Throughout December, 12mm (0.47") of snow is accumulated. In Caernarfon, United Kingdom, during the entire year, snow falls for 8.8 days and aggregates up to 58mm (2.28") of snow.Daylight
The month with the shortest days is December, with an average of 7h and 36min of daylight.On the first day of the month, sunrise is at 8:08 am and sunset at 4:03 pm. On the last day of December, sunrise is at 8:31 am and sunset at 4:09 pm GMT.
Sunshine
The month with the least sunshine is December, with an average of 3.4h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Caernarfon. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Caernarfon in December?
What is the average humidity in December in Caernarfon?
How much does it rain in Caernarfon in December?
How much does it snow in Caernarfon in December?
What is the month with the shortest days in Caernarfon?
How many hours of daylight does Caernarfon have in December?
What time are sunrise and sunset in December in Caernarfon?
What is the month with the least sunshine in Caernarfon?
How long on average sun shines in December in Caernarfon?
When is the lowest UV index in Caernarfon?
What is the UV index reading in December in Caernarfon?
Average temperature in December
Caernarfon, United Kingdom
- Average high temperature in December: 8.5°C
The warmest month (with the highest average high temperature) is July (16.7°C).
The month with the lowest average high temperature is February (7°C).
- Average low temperature in December: 5.8°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).
Average pressure in December
Caernarfon, United Kingdom
- Average pressure in December: 1011.9mbar
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
Caernarfon, United Kingdom
- Average wind speed in December: 25.3km/h
The windiest month (with the highest average wind speed) is December (25.3km/h).
The calmest month (with the lowest average wind speed) is June (15.1km/h).
Average humidity in December
Caernarfon, United Kingdom
- Average humidity in December: 84%
The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is April (81%).
Average rainfall in December
Caernarfon, United Kingdom
- Average rainfall in December: 86mm
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is May (37mm).
Average rainfall days in December
Caernarfon, United Kingdom
- Average rainfall days in December: 23.3 days
The month with the highest number of rainy days is August (23.6 days).
The month with the least rainy days is April (16.3 days).
Average snowfall in December
Caernarfon, United Kingdom
- Average snowfall in December: 12mm
The month with the highest snowfall is February (19mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Caernarfon, United Kingdom
- Average snowfall days in December: 1.7 days
The month with the highest number of snowfall days is February (2.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Caernarfon, 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: 3h and 2min
The month with the most sunshine is May (Average sunshine: 7h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in December
Caernarfon, United Kingdom
- Average sunshine days in December: 4.2 days
The month with the most sunshine days is April (11.4 days).
The month with the least sunshine days is December (4.2 days).
Average UV index in December
Caernarfon, 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, March, November and December (UV index 2).
Average cloud cover in December
Caernarfon, United Kingdom
- Average cloud cover in December: 68
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is May (Cloud cover 49).
Average visibility in December
Caernarfon, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are September and October (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, November and December (9km).
