January weather forecast and climate
Oslo, Norway

The Vigeland sculpture park in Oslo, Norway, at dusk
The Vigeland sculpture park in Oslo, Norway, at dusk
January, like December, is a freezing cold winter month in Oslo, Norway, with temperature in the range of an average high of -1.8°C (28.8°F) and an average low of -6.8°C (19.8°F).

Temperature

January is the coldest month, with an average high-temperature of -1.8°C (28.8°F) and an average low-temperature of -6.8°C (19.8°F).

Rainfall

In Oslo, during 6 rainfall days, 49mm (1.93") of precipitation is typically accumulated. Throughout the year, in Oslo, there are 77 rainfall days, and 763mm (30.04") of precipitation is accumulated.

Sea temperature

In Oslo, the average seawater temperature in January is 4.2°C (39.6°F).
Note: 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.

Daylight

In Oslo, the average length of the day in January is 6.9h.

Sunshine

In January, the average sunshine in Oslo is 1.3h.

UV index

January, November and December, with an average maximum UV index of 0, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for average individuals.
Note: In January, the average maximum UV index of 0 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the coldest month in Oslo?

With an average high-temperature of -1.8°C (28.8°F) and an average low-temperature of -6.8°C (19.8°F), January is the coldest month in Oslo.

What is the temperature in January in Oslo?

The average high-temperature, in January, is -1.8°C (28.8°F), while the average low-temperature is -6.8°C (19.8°F).

How much does it rain in Oslo in January?

In Oslo, Norway, during January, the rain falls for 6 days and regularly aggregates up to 49mm (1.93") of precipitation.

What is the water temperature in January in Oslo?

In Oslo, Norway, the average seawater temperature in January is 4.2°C (39.6°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

What is the average length of the day in January in Oslo?

The average length of the day in January in Oslo is 6.9h.

How long on average sun shines in January in Oslo?

In Oslo, the average sunshine in January is 1.3h.

What is the month with the lowest UV index in Oslo?

Months with the lowest UV index in Oslo are January, November and December, with an average maximum UV index of 0.

What is the UV index intensity in January in Oslo?

The average daily maximum UV index in January is 0. A UV Index of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in January - Oslo, Norway
  • Average high temperature in January: -1.8°C

The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-1.8°C).

  • Average low temperature in January: -6.8°C

The month with the highest average low temperature is July (12.2°C).
The coldest months (with the lowest average low temperature) are January and February (-6.8°C).

Average rainfall in January - Oslo, Norway
  • Average rainfall in January: 49mm

The wettest month (with the highest rainfall) is September (90mm).
The driest month (with the least rainfall) is February (36mm).

Average rainfall days in January - Oslo, Norway
  • Average rainfall days in January: 6 days

Months with the highest number of rainy days are August, October and November (8 days).
The month with the least rainy days is February (4 days).

Average sea temperature in January - Oslo, Norway
  • Average sea temperature in January: 4.2°C

The best month for swimming (with the highest average sea temperature) is August (17.9°C).
The coldest month (with the lowest average sea temperature) is March (3°C).

Average daylight in January / Average sunshine in January - Oslo, Norway
  • Average daylight in January: 6.9h

The month with the longest days is June (Average daylight: 18.7h).
The month with the shortest days is December (Average daylight: 6.1h).

  • Average sunshine in January: 1.3h

The month with the most sunshine is June (Average sunshine: 8.3h).
The month with the least sunshine is December (Average sunshine: 1.1h).

Average UV index in January - Oslo, Norway
  • Average UV index in January: 0

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, November and December (UV index 0).