January weather forecastTønsberg, Norway

January

Weather in January

January is the coldest month in Tønsberg, Norway, distinguished by brief daylight hours and frequent snow showers. Temperature hovers from a chilly -2.5°C (27.5°F) to a crisp high of 0.4°C (32.7°F). Moreover, the city experiences snowfall during the majority of the days, turning landscapes into a winter wonderland. Relative humidity increases due to colder air temperatures, which can intensify the feeling of coldness. As the sun stays low-lying, sunlight is scarce, leaving the skies overcast for most of the day.

Temperature

Tønsberg registers an average high-temperature of a still cold 0.4°C (32.7°F) with the arrival of January, showing minor deviation from the preceding month. A consistent average low of -2.5°C (27.5°F) is noted throughout January, only a small step down from its daytime high.

Humidity

In Tønsberg, the average relative humidity in January is 83%.

Rainfall

In January, the rain falls for 6 days. Throughout January, 37mm (1.46") of precipitation is accumulated. Throughout the year, there are 130.2 rainfall days, and 549mm (21.61") of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Tønsberg. The month with the most snowfall is January, when snow falls for 9.9 days and typically aggregates up to 111mm (4.37") of snow.

Sea temperature

In Tønsberg, the average seawater temperature in January is 4°C (39.2°F).
Note: In relation to swimming, the extreme cold, danger, and potential fatality of this situation are apparent. Without suitable insulated waterproof clothing, the onset of hypothermia is quick.

Daylight

In Tønsberg, the average length of the day in January is 7h and 3min.
On the first day of the month, sunrise is at 09:13 and sunset at 15:29. On the last day of January, sunrise is at 08:31 and sunset at 16:32 CET.

Sunshine

In Tønsberg, the average sunshine in January is 3.5h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: During January, 2 as the daily maximum UV index converts into the following advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.

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

Frequently asked questions

In Tønsberg, 0.4°C (32.7°F) is the average high-temperature and -2.5°C (27.5°F) is the average low-temperature during January.

In Tønsberg, Norway, the average relative humidity in January is 83%.

In January, in Tønsberg, Norway, the rain falls for 6 days. Throughout January, 37mm (1.46") of precipitation is accumulated.

January is the month with the most snowfall. Snow falls for 9.9 days and accumulates 111mm (4.37") of snow.

In January, in Tønsberg, Norway, it is snowing for 9.9 days. Throughout January, 111mm (4.37") of snow is accumulated.

In January, the average sea temperature in Tønsberg, Norway, is 4°C (39.2°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

In Tønsberg, the average day length in January is 7h and 3min.

On the first day of January in Tønsberg, Norway, sunrise is at 09:13 and sunset at 15:29. On the last day of the month, sunrise is at 08:31 and sunset at 16:32 CET.

The average sunshine duration in January in Tønsberg, Norway, is 3.5h.

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

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

1.9°C

0.4°C

0.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

21km/h

20.6km/h

19.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

6.1

9.9

9.3

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

16.8

15.8

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Tønsberg, Norway

Average high temperature in January: 0.4°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 (0.3°C).

Average low temperature in January: -2.5°C

The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is February (-3°C).

Average pressure in January
Tønsberg, Norway

Average pressure in January: 1011.1mbar

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 January
Tønsberg, Norway

Average wind speed in January: 19.3km/h

The windiest months (with the highest average wind speed) are November and December (19.7km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).

Average humidity in January
Tønsberg, Norway

Average humidity in January: 83%

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 January
Tønsberg, Norway

Average rainfall in January: 37mm

The wettest month (with the highest rainfall) is November (65mm).
The driest month (with the least rainfall) is April (23mm).

Average rainfall days in January
Tønsberg, Norway

Average rainfall days in January: 6 days

The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is February (5.9 days).

Average snowfall in January
Tønsberg, Norway

Average snowfall in January: 111mm

The month with the highest snowfall is January (111mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in January
Tønsberg, Norway

Average snowfall days in January: 9.9 days

The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average sea temperature in January
Tønsberg, Norway

Average sea temperature in January: 4°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 January /
Average sunshine in January
Tønsberg, Norway

Average daylight in January: 7h and 0min

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 18min).

Average sunshine in January: 3h and 30min

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 January
Tønsberg, Norway

Average sunshine days in January: 15.8 days

The month with the most sunshine days is April (19.9 days).
The months with the least sunshine days are June and July (13.4 days).

Average UV index in January
Tønsberg, Norway

Average UV index in January: 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).

Average cloud cover in January
Tønsberg, Norway

Average cloud cover in January: 57

The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are June, July and August (Cloud cover 36).

Average visibility in January
Tønsberg, Norway

Average visibility in January: 9km

The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).