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
Weather in December
Temperature
As Rostrevor, United Kingdom, transitions into December, the average high-temperature stands at a still chilly 7.2°C (45°F), offering little variation from the preceding month. During the nights of December, Rostrevor records an average temperature of 4°C (39.2°F), a minor drop from daytime peaks.Humidity
With an average relative humidity of 88%, December is the most humid month.Rainfall
In Rostrevor, in December, it is raining for 14.8 days, with typically 43mm (1.69") of accumulated precipitation. In Rostrevor, United Kingdom, during the entire year, the rain falls for 199.5 days and collects up to 567mm (22.32") of precipitation.Snowfall
Months with snowfall are January through April, November and December. In December, in Rostrevor, it is snowing for 2.3 days. Throughout December, 13mm (0.51") of snow is accumulated. Throughout the year, there are 13.2 snowfall days, and 128mm (5.04") of snow is accumulated.Sea temperature
In Rostrevor, in December, the average water temperature is 10.9°C (51.6°F).Note: Unprotected swimming in 10.9°C (51.6°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 Rostrevor is December, with an average of 7h and 30min of daylight.On the first day of the month, sunrise is at 8:21 am and sunset at 4:06 pm. On the last day of December, in Rostrevor, sunrise is at 8:44 am and sunset at 4:11 pm GMT.
Sunshine
The average sunshine in December is 4.2h.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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What are the temperatures in Rostrevor in December?
What is the most humid month in Rostrevor?
What is the average humidity in December in Rostrevor?
How much does it rain in Rostrevor in December?
How many days does it snow in December in Rostrevor?
What is the water temperature in December in Rostrevor?
What is the month with the shortest days in Rostrevor?
How many hours of daylight does Rostrevor have in December?
When is the sunrise / sunset in December in Rostrevor?
How many hours of sunshine does Rostrevor have in December?
What is the month with the lowest UV index in Rostrevor?
What is the UV index intensity in December in Rostrevor?
Average temperature in December
Rostrevor, United Kingdom
- Average high temperature in December: 7.2°C
The warmest months (with the highest average high temperature) are July and August (16.4°C).
The month with the lowest average high temperature is January (6.7°C).
- Average low temperature in December: 4°C
The month with the highest average low temperature is August (11.5°C).
The coldest month (with the lowest average low temperature) is February (3.1°C).
Average pressure in December
Rostrevor, United Kingdom
- Average pressure in December: 1009.9mbar
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 December
Rostrevor, United Kingdom
- Average wind speed in December: 22.7km/h
The windiest month (with the highest average wind speed) is January (22.8km/h).
The calmest months (with the lowest average wind speed) are June and July (14.2km/h).
Average humidity in December
Rostrevor, United Kingdom
- Average humidity in December: 88%
The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are March, April and May (84%).
Average rainfall in December
Rostrevor, United Kingdom
- Average rainfall in December: 43mm
The wettest month (with the highest rainfall) is August (66mm).
The driest months (with the least rainfall) are January and April (35mm).
Average rainfall days in December
Rostrevor, United Kingdom
- Average rainfall days in December: 14.8 days
The month with the highest number of rainy days is August (21.6 days).
The month with the least rainy days is February (13.5 days).
Average snowfall in December
Rostrevor, United Kingdom
- Average snowfall in December: 13mm
The month with the highest snowfall is February (40mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Rostrevor, United Kingdom
- Average snowfall days in December: 2.3 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Rostrevor, United Kingdom
- Average sea temperature in December: 10.9°C
The best month for swimming (with the highest average sea temperature) is August (14.7°C).
The coldest month (with the lowest average sea temperature) is March (8.3°C).
Average daylight in December /
Average sunshine in December
Rostrevor, United Kingdom
- Average daylight in December: 7h and 3min
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 30min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is June (Average sunshine: 7h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in December
Rostrevor, United Kingdom
- Average sunshine days in December: 11.9 days
The months with the most sunshine days are January and November (12 days).
The month with the least sunshine days is August (6.1 days).
Average UV index in December
Rostrevor, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are May, 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 December
Rostrevor, United Kingdom
- Average cloud cover in December: 57
The months with the most cloud cover are January and February (Cloud cover 61).
The month with the least cloud cover is April (Cloud cover 52).
Average visibility in December
Rostrevor, 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).
Rostrevor, United Kingdom
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