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
Merstham's weather in December displays an average high-temperature of a frosty 7.9°C (46.2°F), showing minor disparity from November's 10.2°C (50.4°F). Merstham reports an average low-temperature of 3.7°C (38.7°F) during the subtly cooler December nights.Humidity
With an average relative humidity of 89%, December is the most humid month in Merstham, United Kingdom.Rainfall
The month with the most rainfall is December, when the rain falls for 13.7 days and typically aggregates up to 47mm (1.85") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Merstham, in December, snow falls for 2.1 days, with typically accumulated 15mm (0.59") of snow. Throughout the year, there are 10.1 snowfall days, and 66mm (2.6") of snow is accumulated.Daylight
The month with the shortest days in Merstham is December, with an average of 8h and 0min of daylight.On the first day of the month, sunrise is at 7:43 am and sunset at 3:56 pm. On the last day of December, in Merstham, United Kingdom, sunrise is at 8:04 am and sunset at 4:02 pm GMT.
Sunshine
In Merstham, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index in Merstham are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What is the average December temperature in Merstham?
What is the most humid month in Merstham?
What is the average humidity in December in Merstham?
What is the rainiest month in Merstham?
How much does it rain in Merstham in December?
How much does it snow in Merstham in December?
What is the month with the shortest days in Merstham?
How many hours of daylight does Merstham have in December?
When are sunrise and sunset in December in Merstham?
How many hours of sunshine does Merstham have in December?
When is the lowest UV index in Merstham?
What is the UV index reading in December in Merstham?
Average temperature in December
Merstham, United Kingdom
- Average high temperature in December: 7.9°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (6.7°C).
- Average low temperature in December: 3.7°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.4°C).
Average pressure in December
Merstham, United Kingdom
- Average pressure in December: 1014.7mbar
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
Merstham, United Kingdom
- Average wind speed in December: 17.2km/h
The windiest month (with the highest average wind speed) is February (17.5km/h).
The calmest months (with the lowest average wind speed) are July, August and September (12.8km/h).
Average humidity in December
Merstham, United Kingdom
- Average humidity in December: 89%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (74%).
Average rainfall in December
Merstham, 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 (21mm).
Average rainfall days in December
Merstham, United Kingdom
- Average rainfall days in December: 13.7 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is September (11.1 days).
Average snowfall in December
Merstham, United Kingdom
- Average snowfall in December: 15mm
The month with the highest snowfall is February (25mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Merstham, United Kingdom
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is February (3.8 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
Merstham, United Kingdom
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are July and August (Average sunshine: 8h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Merstham, United Kingdom
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in December
Merstham, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Merstham, United Kingdom
- Average cloud cover in December: 58
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 47).
Average visibility in December
Merstham, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Merstham, United Kingdom
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