December weather forecastHeemskerk, Netherlands
December
Weather in December
December, the first month of the winter in Heemskerk, is also a frosty month, with temperature in the range of an average low of 5.6°C (42.1°F) and an average high of 7.7°C (45.9°F).Temperature
With the transition into December, Heemskerk notes an average high-temperature of a frosty 7.7°C (45.9°F), closely resembling November. Heemskerk, in December, registers a nighttime average temperature of 5.6°C (42.1°F).Humidity
The months with the highest humidity in Heemskerk are January and December, with an average relative humidity of 83%.Rainfall
In December, the rain falls for 17 days. Throughout December, 33mm (1.3") of precipitation is accumulated. In Heemskerk, during the entire year, the rain falls for 169.2 days and collects up to 339mm (13.35") of precipitation.Snowfall
Months with snowfall in Heemskerk are January through March and December. December is the first month it typically snows. Throughout December, in the average 1.8 snowfall days, it receives 6mm (0.24") of snow. Throughout the year, in Heemskerk, there are 7.7 snowfall days, and 23mm (0.91") of snow is accumulated.Daylight
With an average of 7h and 48min of daylight, December has the shortest days of the year in Heemskerk.On the first day of the month, sunrise is at 08:29 and sunset at 16:30. On the last day of December, in Heemskerk, sunrise is at 08:51 and sunset at 16:37 CET.
Sunshine
With an average of 3.4h of sunshine, December has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Heemskerk. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Heemskerk, Netherlands
- Average high temperature in December: 7.7°C
The warmest month (with the highest average high temperature) is August (19.9°C).
The months with the lowest average high temperature are January and February (5.8°C).
- Average low temperature in December: 5.6°C
The month with the highest average low temperature is August (16.6°C).
The coldest month (with the lowest average low temperature) is February (3.3°C).
Average pressure in December
Heemskerk, Netherlands
- Average pressure in December: 1013.9mbar
The month with the highest atmospheric pressure is September (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).
Average wind speed in December
Heemskerk, Netherlands
- Average wind speed in December: 28.4km/h
The windiest month (with the highest average wind speed) is December (28.4km/h).
The calmest month (with the lowest average wind speed) is July (18km/h).
Average humidity in December
Heemskerk, Netherlands
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Heemskerk, Netherlands
- Average rainfall in December: 33mm
The wettest month (with the highest rainfall) is August (48mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in December
Heemskerk, Netherlands
- Average rainfall days in December: 17 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is April (10.6 days).
Average snowfall in December
Heemskerk, Netherlands
- Average snowfall in December: 6mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Heemskerk, Netherlands
- Average snowfall days in December: 1.8 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Heemskerk, Netherlands
- Average daylight in December: 7h and 48min
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: 3h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in December
Heemskerk, Netherlands
- Average sunshine days in December: 9.1 days
The month with the most sunshine days is April (17.7 days).
The month with the least sunshine days is December (9.1 days).
Average UV index in December
Heemskerk, 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
Heemskerk, 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 39).
Average visibility in December
Heemskerk, Netherlands
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (10km).
The month with the lowest visibility is December (9km).
