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 shift into December records an average high-temperature of a frosty 7.5°C (45.5°F), subtly varied from November's 10.4°C (50.7°F). December sees a slight dip to an average low temperature of 5.1°C (41.2°F) from the daytime highs.Humidity
The months with the highest humidity in Heenvliet are January and December, with an average relative humidity of 83%.Rainfall
In Heenvliet, during December, the rain falls for 15.7 days and regularly aggregates up to 32mm (1.26") of precipitation. Throughout the year, in Heenvliet, there are 167.9 rainfall days, and 321mm (12.64") of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Heenvliet, Netherlands, in December, snow falls for 1.8 days, with typically accumulated 6mm (0.24") of snow. Throughout the year, in Heenvliet, there are 8.6 snowfall days, and 31mm (1.22") of snow is accumulated.Daylight
December has the shortest days of the year in Heenvliet, with an average of 7h and 54min of daylight.On the first day of December, sunrise is at 08:28 and sunset at 16:35. On the last day of the month, sunrise is at 08:50 and sunset at 16:42 CET.
Sunshine
The month with the least sunshine is December, with an average of 3.7h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Heenvliet. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What is the usual temperature for Heenvliet in December?
What are the most humid months in Heenvliet?
What is the average humidity in December in Heenvliet?
How many days does it rain in December in Heenvliet?
How many days does it snow in December in Heenvliet?
What is the month with the shortest days in Heenvliet?
How many hours of daylight does Heenvliet have in December?
When is the sunrise / sunset in December in Heenvliet?
What is the month with the least sunshine in Heenvliet?
How long on average sun shines in December in Heenvliet?
When is the lowest UV index in Heenvliet?
What is the UV index reading in December in Heenvliet?
Average temperature in December
Heenvliet, Netherlands
- Average high temperature in December: 7.5°C
The warmest month (with the highest average high temperature) is August (20.9°C).
The month with the lowest average high temperature is January (6°C).
- Average low temperature in December: 5.1°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is February (3.1°C).
Average pressure in December
Heenvliet, Netherlands
- Average pressure in December: 1014.8mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1011.4mbar).
Average wind speed in December
Heenvliet, Netherlands
- Average wind speed in December: 24.9km/h
The windiest month (with the highest average wind speed) is December (24.9km/h).
The calmest month (with the lowest average wind speed) is July (16.3km/h).
Average humidity in December
Heenvliet, 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 April (75%).
Average rainfall in December
Heenvliet, Netherlands
- Average rainfall in December: 32mm
The wettest month (with the highest rainfall) is August (43mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in December
Heenvliet, Netherlands
- Average rainfall days in December: 15.7 days
The month with the highest number of rainy days is October (17 days).
The month with the least rainy days is April (9.6 days).
Average snowfall in December
Heenvliet, Netherlands
- Average snowfall in December: 6mm
The months with the highest snowfall are January and February (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Heenvliet, Netherlands
- Average snowfall days in December: 1.8 days
The month with the highest number of snowfall days is February (2.9 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
Heenvliet, 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 54min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in December
Heenvliet, Netherlands
- Average sunshine days in December: 9.7 days
The month with the most sunshine days is April (17.8 days).
The months with the least sunshine days are November and December (9.7 days).
Average UV index in December
Heenvliet, 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
Heenvliet, Netherlands
- Average cloud cover in December: 63
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Heenvliet, Netherlands
- Average visibility in December: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January and December (9km).
Heenvliet, Netherlands
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