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Oslo in January: Weather, Average temperature and Climate

Take a look at past year’s weather for Oslo in January and see if it is worth visiting.
Check flight prices to Oslo on Avionero:
January

Weather in Oslo in January 2025

OK Weather
Chill
☁️
Cloudy
🌊
Cold water
Oslo in January usually sees fair weather conditions, with an average daily high temperature of +32°F and roughly 3 sunny days. However, you should prepare for about 12 snowy days with an average precipitation of 50 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • January is usually the coldest month of the year in Oslo;

Average weather

☀️
+32°F
Avg. max. temperature
-18°F
Min.
+64°F
Max.
29 mm
Total precipitation
84%
Avg. humidity
2 m/s
Avg. wind
3 ☀️
Sunny Days
13 ⛅️
Cloudy
3 🌦
Rainy
Our opinion: Oslo has OK weather in January.

Average temperature in Oslo in January

Here are the expected maximum, average and minimum temperatures in Oslo for January based on the historical data.
Last Year
Historical Data

The temperature in January is +34°F on average, with a range between a maximum of +45°F during the day and a minimum of +5°F at night.

The average maximum temperature goes up 9% by the end of the month, compared with the beginning of the month, from +30°F to +34°F.

Is Oslo warm or cold in January?

Oslo is typically chill in January.

Maximum temperatures go down compared to the previous month from +34°F to +32°F. The minimum temperature also goes down from +25°F to +21°F.

Pack a jumper and a jacket as there will be cooler temperatures.

January is the coldest month in Oslo, here is the comparison with other months:

Water temperature in Oslo in January

Water in Oslo in January is Cold. It varies from +33°F to +46°F, with an average of +40°F. Note that the air temperature is lower than the water temperature, averaging around +32°F.

The water temperature in January is one of the coldest of the entire year:

The warmest water temperatures in Oslo are reached in August, when the average sea temperature rises to +64°F. The coldest water temperatures are in March, with an average of +37°F.

Can you swim in Oslo in January?

We would not recommend swimming in Oslo in January, the water is very cold (+40°F on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.

Climate in Oslo in January

Oslo weather looks like this, on average, in January and the surrounding months.
DecemberJanuaryFebruary
Avg. temperature
+34°F+32°F+34°F
Min. temperature
-15°F-18°F-18°F
Max. temperature
+55°F+64°F+68°F
Rainfall
34 mm29 mm30 mm
Wind
2 m/s2 m/s2 m/s
Avg. water temperature
+43°F+40°F+38°F
Humidity
84%84%81%
Air pressure
1008 HPa1009 HPa1011 HPa
Sunny days
233
Cloudy days
141312
Rainy days
433
Snowy days
111210

January weather is still as ok as in December. It’s getting colder in January. From +34°F in the day, the average maximum temperature lowers to +32°F. As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 34 mm to 29 mm. Humidity levels don’t change as the month goes on, averaging around 84%. The average wind speed doesn’t change much during January, staying around 2 m/s. The good news is there are likely to be more sunny days in January, from 2 to 3.

February brings much the same weather, it remains ok.

Wind

Wind speed in Oslo in January based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Oslo is gradually decreasing during January, going from 3 m/s to 1 m/s over the course of the month.

Rain

Amount of rainfall in mm during January in Oslo based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in January stands at 23%, leading to total precipitation of around 55 mm. The maximum amount of rainfall per day is around 16 mm, which is considered light rain. On average, there are about 7 rainy days during January, so prepare to bring an umbrella.
Here’s how January is compared with other months in the amount of precipitation, total mm:
Oslo wettest month is October, where a typical day has a 48% chance of precipitation and 114 mm of rainfall per day. March, on the other hand, is the driest month with a mere 13% chance of precipitation and 26 mm of rainfall per day.

Snow

Amount of snow in mm during January in Oslo based on historical data.
Last Year
Historical Data
The chance of snow on a typical day in January is 26%, for a monthly total of around 85 mm.

January is one of the snowiest months in Oslo.

Here’s how January is compared with other months in the amount of snow, total mm:

How was the weather last January in Oslo?

This is the weather in Oslo in January 2023:
1 January
☁️
+30°F
2 January
☁️
+28°F
3 January
☀️
+21°F
4 January
🌨️
+28°F
5 January
🌨️
+28°F
6 January
🌨️
+27°F
7 January
☁️
+37°F
8 January
🌧️
+42°F
9 January
🌧️
+40°F
10 January
☁️
+37°F
11 January
🌧️
+41°F
12 January
☁️
+39°F
13 January
🌧️
+39°F
14 January
🌨️
+36°F
15 January
🌨️
+35°F
16 January
☁️
+34°F
17 January
🌨️
+36°F
18 January
🌨️
+35°F
19 January
🌨️
+33°F
20 January
☀️
+30°F
21 January
☀️
+17°F
22 January
☁️
+22°F
23 January
☁️
+32°F
24 January
☁️
+38°F
25 January
☁️
+41°F
26 January
☀️
+40°F
27 January
☁️
+32°F
28 January
☁️
+34°F
29 January
☁️
+41°F
30 January
☀️
+45°F
31 January
☁️
+34°F
In January 2023 Oslo had 5 sunny days, 14 cloudy days, and 4 rainy days. The average maximum temperature was +34°F, with an absolute maximum of +45°F and a minimum of +18°F. The average humidity was 89%, with a maximum of 100% and a minimum of 42%. The average wind speed was 3 m/s, with a maximum of 12 m/s and a minimum of 0 m/s.
Are you planning a trip in January?

Climate Change Over the Years

This is how Oslo climate has changed over the last 43 years.

The climate in Oslo in January has not changed that much over the last 43 years.

The average temperature was the lowest in 1985 (+46°F) and the highest in 2020 (+54°F). The driest year was 1981 with only 527 mm of rainfall, and the wettest year was 2020 with 2467 mm.

FAQ

Frequently asked questions about the weather in Oslo in January:

Is January a good time to visit Oslo?

It’s always a good time to visit Oslo, but the weather is changeable in January, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Oslo in January?

Not really, January is not the best time to sunbathe, unless you visit a local solarium.

Can you swim in Oslo in January?

Swimming in Oslo in January is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.

Is Oslo rainy in January?

Oslo is usually dry in January. Plan your packing around outdoor activities and exploring.

Is it sunny in Oslo in January?

Usually, it’s not very sunny in Oslo in January, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Norway

Check out the weather for other cities in Norway.

Monthly weather in Oslo

Source of the data

For this page, we’ve looked at the typical weather in Oslo, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.