December weather forecastRøyken, Norway
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Røyken, Norway, with an average temperature fluctuating between -5.1°C (22.8°F) and -1.5°C (29.3°F).Temperature
The transition to December results in a modest reduction in average high-temperature, moving from a cold 2.7°C (36.9°F) in November to a freezing cold -1.5°C (29.3°F). December nights in Røyken cool to an average low-temperature of -5.1°C (22.8°F), a marginal decrease from its daytime equivalent.Humidity
In Røyken, the average relative humidity in December is 87%.Rainfall
In Røyken, during December, the rain falls for 7.5 days and regularly aggregates up to 28mm (1.1") of precipitation. Throughout the year, in Røyken, there are 123.4 rainfall days, and 384mm (15.12") of precipitation is accumulated.Snowfall
Months with snowfall in Røyken are January through May, October through December. In Røyken, Norway, in December, during 7.9 snowfall days, 105mm (4.13") of snow is typically accumulated. In Røyken, during the entire year, snow falls for 44.9 days and aggregates up to 505mm (19.88") of snow.Daylight
The month with the shortest days in Røyken is December, with an average of 6h and 6min of daylight.On the first day of December in Røyken, sunrise is at 08:52 and sunset at 15:23. On the last day of the month, sunrise is at 09:18 and sunset at 15:24 CET.
Sunshine
January and December, with an average of 3.4h of sunshine, are months with the least sunshine.UV index
In Røyken, Norway, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 2 in December translates into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Røyken, Norway
- Average high temperature in December: -1.5°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The month with the lowest average high temperature is January (-2.4°C).
- Average low temperature in December: -5.1°C
The month with the highest average low temperature is July (10.6°C).
The coldest months (with the lowest average low temperature) are January and February (-7.2°C).
Average pressure in December
Røyken, Norway
- Average pressure in December: 1008mbar
The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in December
Røyken, Norway
- Average wind speed in December: 10.6km/h
The windiest months (with the highest average wind speed) are January and December (10.6km/h).
The calmest month (with the lowest average wind speed) is August (8.4km/h).
Average humidity in December
Røyken, Norway
- Average humidity in December: 87%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (70%).
Average rainfall in December
Røyken, Norway
- Average rainfall in December: 28mm
The wettest months (with the highest rainfall) are July and November (42mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in December
Røyken, Norway
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is July (15.2 days).
The months with the least rainy days are January and February (4.8 days).
Average snowfall in December
Røyken, Norway
- Average snowfall in December: 105mm
The month with the highest snowfall is March (113mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Røyken, Norway
- Average snowfall days in December: 7.9 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Røyken, Norway
- Average daylight in December: 6h and 6min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in December: 3h and 24min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 3h and 24min).
Average sunshine days in December
Røyken, Norway
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is April (19.1 days).
The month with the least sunshine days is July (13.5 days).
Average UV index in December
Røyken, Norway
- 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 and February (UV index 1).
Average cloud cover in December
Røyken, Norway
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is June (Cloud cover 43).
Average visibility in December
Røyken, Norway
- Average visibility in December: 8km
The months with the highest visibility are April, May, June and July (9km).
The months with the lowest visibility are January, February and March (7km).
