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
Grays starts December with an average high-temperature of a frosty 8°C (46.4°F), a minor shift from November's 10.2°C (50.4°F). December notes an average low temperature of 3.8°C (38.8°F), subtly down from the daytime highs.Humidity
The most humid month in Grays is December, with an average relative humidity of 88%.Rainfall
December is the month with the most rainfall in Grays. Rain falls for 14.5 days and accumulates 47mm (1.85") of precipitation.Snowfall
January through April, November and December are months with snowfall. In December, it is snowing for 2 days. Throughout December, 15mm (0.59") of snow is accumulated. Throughout the year, in Grays, United Kingdom, there are 9 snowfall days, and 60mm (2.36") of snow is accumulated.Sea temperature
In Grays, United Kingdom, in December, the average water temperature is 11.7°C (53.1°F).Note: Unprotected swimming in 11.7°C (53.1°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 Grays, United Kingdom, is December, with an average of 7h and 54min of daylight.On the first day of the month, sunrise is at 7:42 am and sunset at 3:53 pm. On the last day of December, sunrise is at 8:04 am and sunset at 3:59 pm GMT.
Sunshine
In Grays, the average sunshine in December is 4.3h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Grays. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
What are December temperatures in Grays?
What is the most humid month in Grays?
What is the average humidity in December in Grays?
What is the wettest month in Grays?
How much does it rain in Grays in December?
How much does it snow in Grays in December?
What is the water temperature in December in Grays?
What is the month with the shortest days in Grays?
How many hours of daylight does Grays have in December?
When are sunrise and sunset in December in Grays?
How long on average sun shines in December in Grays?
What is the month with the lowest UV index in Grays?
What is the UV index intensity in December in Grays?
Average temperature in December
Grays, United Kingdom
- Average high temperature in December: 8°C
The warmest month (with the highest average high temperature) is July (22°C).
The month with the lowest average high temperature is January (6.7°C).
- Average low temperature in December: 3.8°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (2.4°C).
Average pressure in December
Grays, United Kingdom
- Average pressure in December: 1014.6mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1010.7mbar).
Average wind speed in December
Grays, United Kingdom
- Average wind speed in December: 17.9km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest months (with the lowest average wind speed) are July and August (13.2km/h).
Average humidity in December
Grays, United Kingdom
- Average humidity in December: 88%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (73%).
Average rainfall in December
Grays, United Kingdom
- Average rainfall in December: 47mm
The wettest month (with the highest rainfall) is December (47mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in December
Grays, United Kingdom
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is November (15.2 days).
The month with the least rainy days is September (10.2 days).
Average snowfall in December
Grays, United Kingdom
- Average snowfall in December: 15mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Grays, United Kingdom
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Grays, United Kingdom
- Average sea temperature in December: 11.7°C
The best month for swimming (with the highest average sea temperature) is September (17.3°C).
The coldest month (with the lowest average sea temperature) is March (7.9°C).
Average daylight in December /
Average sunshine in December
Grays, United Kingdom
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is August (Average sunshine: 8h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Grays, United Kingdom
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is November (12.4 days).
Average UV index in December
Grays, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Grays, United Kingdom
- Average cloud cover in December: 57
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 46).
Average visibility in December
Grays, 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).
Grays, United Kingdom
Weather forecast for your location
2. Allow the app to use your location
