Oslo is typically cool in January.

Maximum temperatures go down compared to the previous month from +1°C to 0°C. The minimum temperature also goes down from -4°C to -6°C.

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

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

Water in Oslo in January is Cold. It varies from +1°C to +8°C, with an average of +4°C. Note that the air temperature is lower than the water temperature, averaging around 0°C.

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

January often has better weather than December. It’s getting colder in January. From +1°C in the day, the average maximum temperature lowers to 0°C. As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 34 mm to 29 mm. It feels drier, as humidity decreases from 85% to 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.

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:

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

The average temperature was the lowest in 1985 (+8°C) and the highest in 2020 (+12°C). The driest year was 1981 with only 527 mm of rainfall, and the wettest year was 2020 with 2467 mm.

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.