December weather forecastKatwijk, Netherlands
December
Weather in December
December, the first month of the winter in Katwijk, is still a cold month, with an average temperature fluctuating between 2.5°C (36.5°F) and 5.8°C (42.4°F).Temperature
The shift from November to December includes a small decrease in the average high-temperature, from a chilly 9.3°C (48.7°F) to a cold 5.8°C (42.4°F). Katwijk indicates a consistently low-temperature of 2.5°C (36.5°F) during the nights of December.Humidity
With an average relative humidity of 89%, December is the most humid month.Rainfall
In Katwijk, Netherlands, during December, the rain falls for 13 days and regularly aggregates up to 31mm (1.22") of precipitation. In Katwijk, during the entire year, the rain falls for 174.3 days and collects up to 415mm (16.34") of precipitation.Snowfall
January through March, November and December are months with snowfall. In Katwijk, in December, during 2.1 snowfall days, 16mm (0.63") of snow is typically accumulated. Throughout the year, there are 10 snowfall days, and 66mm (2.6") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 7h and 54min of daylight.On the first day of the month, sunrise is at 08:21 and sunset at 16:29. On the last day of December, in Katwijk, sunrise is at 08:43 and sunset at 16:36 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. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, an average UV index of 2 transforms into the following instructions:
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. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Katwijk, Netherlands
- Average high temperature in December: 5.8°C
The warmest month (with the highest average high temperature) is July (22.6°C).
The month with the lowest average high temperature is January (4.7°C).
- Average low temperature in December: 2.5°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is January (1°C).
Average pressure in December
Katwijk, Netherlands
- Average pressure in December: 1015.2mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1012.1mbar).
Average wind speed in December
Katwijk, Netherlands
- Average wind speed in December: 17.6km/h
The windiest month (with the highest average wind speed) is December (17.6km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).
Average humidity in December
Katwijk, 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 (74%).
Average rainfall in December
Katwijk, Netherlands
- Average rainfall in December: 31mm
The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in December
Katwijk, Netherlands
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (11.6 days).
Average snowfall in December
Katwijk, Netherlands
- Average snowfall in December: 16mm
The month with the highest snowfall is January (26mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Katwijk, Netherlands
- Average snowfall days in December: 2.1 days
The months with the highest number of snowfall days are January and February (3.3 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
Katwijk, Netherlands
- Average daylight in December: 7h and 54min
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 42min
The month with the most sunshine is July (Average sunshine: 9h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in December
Katwijk, Netherlands
- Average sunshine days in December: 14.7 days
The month with the most sunshine days is April (16.3 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in December
Katwijk, 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
Katwijk, Netherlands
- Average cloud cover in December: 65
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in December
Katwijk, Netherlands
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (9km).
The month with the lowest visibility is September (8km).
