Oslo weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Poor
Best time to visit: May – August
What is the weather like in Oslo in January?
In January, Oslo is freezing cold: daytime highs average −2 °C, and nights often drop below freezing (−7 °C). The sea averages 3.9 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Precipitation, often as snow, falls on about 11 days, totalling 71 mm. Snow falls on about 7 days. All in all, January is not an ideal month for a holiday in Oslo.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 14 | 15 | 22 |
| Day | 0° | −2° | 0° |
| Night | −4° | −7° | −6° |
| Sea | 6° | 4° | 3° |
| Sun | 2 h | 2 h | 4 h |
| Rain days | 12 | 11 | 9 |
More details for January
- Daylight
- 6 h 41 min09:05 – 15:46
- UV index
- 0 · lowclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 14 km/haverage daily peak
- Cloud cover
- 72 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 7 days1 cm or more of fresh snow
- Time zone
- UTC+1Europe/Oslo
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %51 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- Warm jacket
- Hat, scarf & gloves
- Rain jacket or umbrella
Oslo in January: quick answers
Is Oslo hot in January?
No. In January, Oslo is freezing cold: daytime highs average −2 °C and nights drop to about −7 °C.
Can you swim in Oslo in January?
Only if you don't mind cold water: in January the sea averages just 3.9 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Oslo in January?
Rain is frequent, with about 11 rainy days and 71 mm in total.
Oslo month by month
The whole year in OsloAll destinations: Norway
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)