December weather forecastGrimstad, Norway
December
Weather in December
The first month of the winter, December, is also an icy month in Grimstad, Norway, with an average temperature fluctuating between 1°C (33.8°F) and 3.7°C (38.7°F).Temperature
The shift into December uncovers an average high-temperature of a cold 3.7°C (38.7°F), subtly different from the previous month. Grimstad marks an average drop to a still icy 1°C (33.8°F) during nighttime in December, following the high of the day.Humidity
The average relative humidity in December in Grimstad is 83%.Rainfall
In Grimstad, during December, the rain falls for 14.6 days and regularly aggregates up to 62mm (2.44") of precipitation. In Grimstad, during the entire year, the rain falls for 152.2 days and collects up to 592mm (23.31") of precipitation.Snowfall
Months with snowfall in Grimstad are January through April, November and December. In Grimstad, during December, snow falls for 5.5 days and regularly aggregates up to 48mm (1.89") of snow. In Grimstad, during the entire year, snow falls for 33.8 days and aggregates up to 320mm (12.6") of snow.Sea temperature
In Grimstad, in December, the average water temperature is 7.1°C (44.8°F).Note: Swimming at temperatures less than 10°C (50°F) in 7.1°C (44.8°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 13°C (55.4°F) without adequate warmth can be discomforting.
Daylight
The month with the shortest days in Grimstad is December, with an average of 6h and 30min of daylight.On the first day of December in Grimstad, sunrise is at 08:48 and sunset at 15:41. On the last day of the month, sunrise is at 09:13 and sunset at 15:43 CET.
Sunshine
With an average of 3.1h of sunshine, December has the least sunshine of the year in Grimstad.UV index
In Grimstad, the average daily maximum UV index in December is 2. 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: The average daily UV index of 2 in December transforms into the following instructions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grimstad, Norway
- Average high temperature in December: 3.7°C
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is February (1.6°C).
- Average low temperature in December: 1°C
The months with the highest average low temperature are July and August (13.2°C).
The coldest month (with the lowest average low temperature) is February (-1.6°C).
Average pressure in December
Grimstad, Norway
- Average pressure in December: 1007.8mbar
The month with the highest atmospheric pressure is April (1014.6mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in December
Grimstad, Norway
- Average wind speed in December: 21.4km/h
The windiest month (with the highest average wind speed) is November (21.5km/h).
The calmest month (with the lowest average wind speed) is June (16.1km/h).
Average humidity in December
Grimstad, Norway
- Average humidity in December: 83%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are May and June (71%).
Average rainfall in December
Grimstad, Norway
- Average rainfall in December: 62mm
The wettest months (with the highest rainfall) are October and November (65mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in December
Grimstad, Norway
- Average rainfall days in December: 14.6 days
The month with the highest number of rainy days is November (16.8 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in December
Grimstad, Norway
- Average snowfall in December: 48mm
The month with the highest snowfall is January (106mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Grimstad, Norway
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Grimstad, Norway
- Average sea temperature in December: 7.1°C
The best month for swimming (with the highest average sea temperature) is August (18.2°C).
The coldest month (with the lowest average sea temperature) is March (3.4°C).
Average daylight in December /
Average sunshine in December
Grimstad, Norway
- Average daylight in December: 6h and 30min
The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in December: 3h and 6min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in December
Grimstad, Norway
- Average sunshine days in December: 10.3 days
The month with the most sunshine days is May (18.5 days).
The month with the least sunshine days is November (7.7 days).
Average UV index in December
Grimstad, Norway
- Average UV index in December: 2
The months with the highest UV index are May, June, July, August and September (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Grimstad, Norway
- Average cloud cover in December: 58
The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in December
Grimstad, Norway
- Average visibility in December: 9km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
