December weather forecastSumar, Netherlands
December
Weather in December
December, the first month of the winter in Sumar, is also a frosty month, with temperature in the range of an average high of 6.4°C (43.5°F) and an average low of 3.1°C (37.6°F).Temperature
Sumar marks the onset of December with an average high-temperature of a still chilly 6.4°C (43.5°F), subtly divergent from November's 9.2°C (48.6°F). The month of December in Sumar is marked by an average minimum temperature of 3.1°C (37.6°F), slightly cooler than its daytime counterpart.Humidity
December is the most humid month, with an average relative humidity of 88%.Rainfall
In Sumar, Netherlands, during December, the rain falls for 18.7 days and regularly aggregates up to 50mm (1.97") of precipitation. In Sumar, during the entire year, the rain falls for 193.8 days and collects up to 494mm (19.45") of precipitation.Snowfall
Months with snowfall in Sumar are January through April, November and December. In December, in Sumar, it is snowing for 3.2 days. Throughout December, 16mm (0.63") of snow is accumulated. Throughout the year, in Sumar, there are 14.8 snowfall days, and 72mm (2.83") of snow is accumulated.Daylight
With an average of 7h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 08:27 and sunset at 16:22. On the last day of December, sunrise is at 08:50 and sunset at 16:28 CET.
Sunshine
The month with the least sunshine in Sumar is December, with an average of 3.3h of sunshine.UV index
The months with the lowest UV index in Sumar, Netherlands, are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sumar, Netherlands
- Average high temperature in December: 6.4°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in December: 3.1°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (1.3°C).
Average pressure in December
Sumar, Netherlands
- Average pressure in December: 1013.3mbar
The months with the highest atmospheric pressure are May and September (1016.4mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).
Average wind speed in December
Sumar, Netherlands
- Average wind speed in December: 21.7km/h
The windiest month (with the highest average wind speed) is December (21.7km/h).
The calmest month (with the lowest average wind speed) is July (14.3km/h).
Average humidity in December
Sumar, Netherlands
- Average humidity in December: 88%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is April (78%).
Average rainfall in December
Sumar, Netherlands
- Average rainfall in December: 50mm
The wettest month (with the highest rainfall) is July (52mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in December
Sumar, Netherlands
- Average rainfall days in December: 18.7 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is April (13.8 days).
Average snowfall in December
Sumar, Netherlands
- Average snowfall in December: 16mm
The month with the highest snowfall is February (26mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Sumar, Netherlands
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is February (4.8 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
Sumar, Netherlands
- Average daylight in December: 7h and 36min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in December
Sumar, Netherlands
- Average sunshine days in December: 8.5 days
The month with the most sunshine days is October (14.5 days).
The month with the least sunshine days is December (8.5 days).
Average UV index in December
Sumar, Netherlands
- Average UV index in December: 2
The month with the highest UV index is 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
Sumar, Netherlands
- Average cloud cover in December: 68
The month with the most cloud cover is December (Cloud cover 68).
The months with the least cloud cover are April and August (Cloud cover 41).
Average visibility in December
Sumar, Netherlands
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
