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
The onset of December is marked by a minor decrease in temperature, transitioning from a frosty 9.1°C (48.4°F) in November to a wintry 5.8°C (42.4°F). With a barely noticeable fluctuation in temperature, Heelsum reaches an average low of 2.4°C (36.3°F) during the December nights.Humidity
The most humid month is December, with an average relative humidity of 89%.Rainfall
In Heelsum, Netherlands, in December, during 17.3 rainfall days, 52mm (2.05") of precipitation is typically accumulated. Throughout the year, there are 193.3 rainfall days, and 523mm (20.59") of precipitation is accumulated.Snowfall
Months with snowfall in Heelsum, Netherlands, are January through April, November and December. In Heelsum, in December, snow falls for 3.5 days, with typically accumulated 32mm (1.26") of snow. In Heelsum, during the entire year, snow falls for 14.5 days and aggregates up to 110mm (4.33") of snow.Daylight
With an average of 7h and 48min of daylight, December has the shortest days of the year in Heelsum, Netherlands.On the first day of the month, sunrise is at 08:23 and sunset at 16:29. On the last day of December, sunrise is at 08:44 and sunset at 16:35 CET.
Sunshine
December has the least sunshine of the year in Heelsum, with an average of 3.4h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
Is December cold in Heelsum?
What is the most humid month in Heelsum?
What is the average humidity in December in Heelsum?
How much does it rain in Heelsum in December?
How much does it snow in Heelsum in December?
What is the month with the shortest days in Heelsum?
What is the average length of the day in December in Heelsum?
What time are sunrise and sunset in December in Heelsum?
What is the month with the least sunshine in Heelsum?
How many hours of sunshine does Heelsum have in December?
What are the months with the lowest UV index in Heelsum?
How high is the UV index in December in Heelsum?
Average temperature in December
Heelsum, Netherlands
- Average high temperature in December: 5.8°C
The warmest months (with the highest average high temperature) are July and August (22.3°C).
The month with the lowest average high temperature is January (4.6°C).
- Average low temperature in December: 2.4°C
The month with the highest average low temperature is August (13.8°C).
The coldest months (with the lowest average low temperature) are January and February (1°C).
Average pressure in December
Heelsum, Netherlands
- Average pressure in December: 1014.9mbar
The month with the highest atmospheric pressure is September (1017.1mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in December
Heelsum, Netherlands
- Average wind speed in December: 17.7km/h
The windiest month (with the highest average wind speed) is December (17.7km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).
Average humidity in December
Heelsum, Netherlands
- Average humidity in December: 89%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Heelsum, Netherlands
- Average rainfall in December: 52mm
The wettest month (with the highest rainfall) is June (53mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in December
Heelsum, Netherlands
- Average rainfall days in December: 17.3 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is September (13.5 days).
Average snowfall in December
Heelsum, Netherlands
- Average snowfall in December: 32mm
The month with the highest snowfall is February (39mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Heelsum, Netherlands
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (4.7 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
Heelsum, Netherlands
- 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 48min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in December
Heelsum, Netherlands
- Average sunshine days in December: 7.9 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is December (7.9 days).
Average UV index in December
Heelsum, Netherlands
- 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, November and December (UV index 2).
Average cloud cover in December
Heelsum, Netherlands
- Average cloud cover in December: 67
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 43).
Average visibility in December
Heelsum, Netherlands
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, October and November (9km).
The months with the lowest visibility are September and December (8km).
Heelsum, Netherlands
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