December weather forecastHorten, Norway

December

Weather in December

Come December, Horten is again enveloped in the throes of winter. The landscape changes dramatically with fresh bouts of snowfall, measuring up to 88mm (3.46"). Residents find themselves amidst weather conditions similar to January, plunging into a freezing winter. The shorter days and long nights give a sense of calm, making it a quiet end to the year.

Temperature

December in Horten, Norway, brings a slight decrease in the average high-temperature, shifting from 5.2°C (41.4°F) in November to a still wintry 1.7°C (35.1°F). A modest nighttime temperature average of -1°C (30.2°F) characterizes December.

Humidity

In December, the average relative humidity is 81%.

Rainfall

In Horten, in December, it is raining for 12.1 days, with typically 55mm (2.17") of accumulated precipitation. Throughout the year, there are 146.5 rainfall days, and 650mm (25.59") of precipitation is accumulated.

Snowfall

Months with snowfall in Horten, Norway, are January through April, October through December. In December, it is snowing for 6.9 days. Throughout December, 88mm (3.46") of snow is accumulated. Throughout the year, in Horten, there are 41.4 snowfall days, and 465mm (18.31") of snow is accumulated.

Sea temperature

In Horten, the average seawater temperature in December is 6.3°C (43.3°F).
Note: Being in 6.3°C (43.3°F) waters at 13°C (55.4°F) is discomforting, but anything below 10°C (50°F) can jeopardize breathing and induce cold shock, factoring in physical endurance.

Daylight

With an average of 6h and 12min of daylight, December has the shortest days of the year in Horten.
On the first day of December, sunrise is at 08:49 and sunset at 15:25. On the last day of the month, sunrise is at 09:15 and sunset at 15:27 CET.

Sunshine

With an average of 3.4h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index in Horten, Norway, are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 2 in December translates into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.

Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in December, in Horten, is 1.7°C (35.1°F), while the average low-temperature is -1°C (30.2°F).

In December, the average relative humidity is 81%.

In Horten, Norway, in December, it is raining for 12.1 days, with typically 55mm (2.17") of accumulated precipitation.

In December, in Horten, it is snowing for 6.9 days. Throughout December, 88mm (3.46") of snow is accumulated.

In Horten, Norway, in December, the average water temperature is 6.3°C (43.3°F). Swimming in 6.3°C (43.3°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

December has the shortest days of the year in Horten, Norway, with an average of 6h and 12min of daylight.

In December, the average day length in Horten is 6h and 13min.

In December, on the first day of the month, sunrise is at 08:49 and sunset at 15:25. On the last day of the month, in Horten, sunrise is at 09:15 and sunset at 15:27 CET.

The month with the least sunshine in Horten, Norway, is December, with an average of 3.4h of sunshine.

In Horten, Norway, the average sunshine duration in December is 3.4h.

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

The average daily maximum UV index in December in Horten is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

5.2°C

1.7°C

0.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

20.2km/h

20.6km/h

20.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

3.5

6.9

11.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

11.9

13.2

13.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Horten, Norway

Average high temperature in December: 1.7°C

The warmest month (with the highest average high temperature) is July (19.2°C).
The month with the lowest average high temperature is February (0.1°C).

Average low temperature in December: -1°C

The month with the highest average low temperature is July (13.8°C).
The coldest month (with the lowest average low temperature) is February (-3.3°C).

Average pressure in December
Horten, Norway

Average pressure in December: 1008mbar

The month with the highest atmospheric pressure is April (1014.4mbar).
The month with the lowest atmospheric pressure is December (1008mbar).

Average wind speed in December
Horten, Norway

Average wind speed in December: 19.2km/h

The windiest months (with the highest average wind speed) are November and December (19.2km/h).
The calmest month (with the lowest average wind speed) is July (13.6km/h).

Average humidity in December
Horten, Norway

Average humidity in December: 81%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April and May (72%).

Average rainfall in December
Horten, Norway

Average rainfall in December: 55mm

The wettest month (with the highest rainfall) is November (76mm).
The driest month (with the least rainfall) is April (26mm).

Average rainfall days in December
Horten, Norway

Average rainfall days in December: 12.1 days

The month with the highest number of rainy days is August (16.3 days).
The month with the least rainy days is February (7.3 days).

Average snowfall in December
Horten, Norway

Average snowfall in December: 88mm

The month with the highest snowfall is January (131mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in December
Horten, Norway

Average snowfall days in December: 6.9 days

The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in December
Horten, Norway

Average sea temperature in December: 6.3°C

The best month for swimming (with the highest average sea temperature) is August (18.4°C).
The coldest month (with the lowest average sea temperature) is March (2.8°C).

Average daylight in December /
Average sunshine in December
Horten, Norway

Average daylight in December: 6h and 12min

The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).

Average sunshine in December: 3h and 24min

The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

Average sunshine days in December
Horten, Norway

Average sunshine days in December: 13.2 days

The month with the most sunshine days is April (18.3 days).
The month with the least sunshine days is February (11.8 days).

Average UV index in December
Horten, 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, February, March, October, November and December (UV index 2).