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
December brings a marginal elevation to a still chilly 6.9°C (44.4°F) from November's 9.2°C (48.6°F) in Helmdon's average high-temperatures. Throughout December, Helmdon observes a steady low-temperature average of 2.6°C (36.7°F), reflecting a minor dip from daytime highs.Humidity
With an average relative humidity of 91%, December is the most humid month.Rainfall
In Helmdon, during December, the rain falls for 10.8 days and regularly aggregates up to 17mm (0.67") of precipitation. In Helmdon, during the entire year, the rain falls for 139.2 days and collects up to 210mm (8.27") of precipitation.Snowfall
January through March and December are months with snowfall in Helmdon. December is the first month it typically snows. Throughout December, in the average 1.5 snowfall days, it receives 5mm (0.2") of snow. In Helmdon, during the entire year, snow falls for 9.6 days and aggregates up to 23mm (0.91") of snow.Daylight
With an average of 7h and 48min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:51 am and sunset at 3:56 pm. On the last day of December, in Helmdon, sunrise is at 8:13 am and sunset at 4:02 pm GMT.
Sunshine
In December, the average sunshine is 4h.UV index
The months with the lowest UV index in Helmdon are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Helmdon?
What is the most humid month in Helmdon?
What is the average humidity in December in Helmdon?
How much does it rain in Helmdon in December?
When does it start to snow in Helmdon?
What is the month with the shortest days in Helmdon?
What is the average length of the day in December in Helmdon?
When are sunrise and sunset in December in Helmdon?
How many hours of sunshine does Helmdon have in December?
When is the lowest UV index in Helmdon?
What is the UV index reading in December in Helmdon?
Average temperature in December
Helmdon, United Kingdom
- Average high temperature in December: 6.9°C
The warmest month (with the highest average high temperature) is July (20.6°C).
The month with the lowest average high temperature is January (6.1°C).
- Average low temperature in December: 2.6°C
The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is January (1.2°C).
Average pressure in December
Helmdon, United Kingdom
- Average pressure in December: 1013.7mbar
The month with the highest atmospheric pressure is May (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in December
Helmdon, United Kingdom
- Average wind speed in December: 18.5km/h
The windiest months (with the highest average wind speed) are February and December (18.5km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in December
Helmdon, United Kingdom
- Average humidity in December: 91%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is August (80%).
Average rainfall in December
Helmdon, United Kingdom
- Average rainfall in December: 17mm
The wettest months (with the highest rainfall) are June and August (25mm).
The driest months (with the least rainfall) are March and April (12mm).
Average rainfall days in December
Helmdon, United Kingdom
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is August (14.6 days).
The month with the least rainy days is February (9.1 days).
Average snowfall in December
Helmdon, United Kingdom
- Average snowfall in December: 5mm
The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Helmdon, United Kingdom
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (3.9 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
Helmdon, United Kingdom
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 7h and 18min).
The months with the least sunshine are February and November (Average sunshine: 3h and 42min).
Average sunshine days in December
Helmdon, United Kingdom
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is March (17.6 days).
The month with the least sunshine days is August (11.6 days).
Average UV index in December
Helmdon, 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
Helmdon, United Kingdom
- Average cloud cover in December: 60
The month with the most cloud cover is November (Cloud cover 65).
The month with the least cloud cover is September (Cloud cover 53).
Average visibility in December
Helmdon, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, July, August, October and December (9km).
The months with the lowest visibility are April, May, June, September and November (8km).
Helmdon, United Kingdom
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