Oslo, Norway skyline

Oslo Weather in January

Oslo, Norway in January: how the month usually turns out, from 2006–2025 averages.

A typical January day in Oslo peaks at -1.4°C (29.5°F) and drops to -6.3°C (20.7°F) overnight; expect about 12 rainy days (76 mm in total) and 2.6 hours of sunshine daily.

Avg high

-1.4°C (29.5°F)

Avg low

-6.3°C (20.7°F)

Rainfall

76 mm (3 in)

Rainy days

12 days

Sunshine

2.6 h / day

Humidity

86%

January vs the rest of the year

January is the coolest month in Oslo, and the 5th driest for rain.

MonthAvg highvs JanuaryRainRainy days
January-1.4°C (29.5°F)—76 mm12
February-0.1°C (31.8°F)+1.3°C (+2.3°F)60 mm10
March4.5°C (40.1°F)+5.9°C (+10.6°F)53 mm8
April10.5°C (50.9°F)+11.9°C (+21.4°F)50 mm8
May15.9°C (60.6°F)+17.3°C (+31.1°F)79 mm12
June20°C (68°F)+21.4°C (+38.5°F)94 mm12
July21.6°C (70.9°F)+23°C (+41.4°F)121 mm14
August19.7°C (67.5°F)+21.1°C (+38°F)114 mm15
September15.9°C (60.6°F)+17.3°C (+31.1°F)91 mm11
October9.5°C (49.1°F)+10.9°C (+19.6°F)92 mm12
November4.3°C (39.7°F)+5.7°C (+10.3°F)83 mm12
December0.2°C (32.4°F)+1.6°C (+2.9°F)71 mm12

What January feels like in Oslo

Winter bottoms out in January, the coolest month of Oslo's year. Afternoons stay around freezing — the sort of cold that makes long outdoor stretches hard work. Little changes after sunset — nights drop well below freezing, only slightly below the daytime level. The air is damp, which makes cool temperatures feel colder, particularly in wind.

Rain in Oslo in January

Showers are a regular feature, arriving about one day in 3. A rainy day brings about 6.3 mm (0.2 in) on average — steady rain rather than a passing shower. Across the year Oslo averages about 7.1 mm per rainy day, so January is typical.

Daylight and sunshine in January

On 15 January the sun rises at about 9:05 am and sets around 3:46 pm local time, giving 6 h 41 min of daylight. The days are stretching out — 42 min more daylight than mid-December. Measured sunshine covers about 39% of the daylight — skies are often cloudy.

How January compares to the rest of the year

Ranked by average high, January comes out as the coolest month in Oslo. Afternoons run 1.6°C (2.9°F) cooler than in December, with 5 mm more rain. From here it only gets warmer, starting with February. February averages a high of -0.1°C (31.8°F).

Who January suits

  • Sightseeing: less ideal — it is cold for long walks.
  • Parks & outdoor: less ideal — too cool to sit outside for long.
  • Beach: less ideal — the sea air is too cool.
  • Hiking: less ideal — trails are cool.
  • Museums & indoor: a good choice — warm places to spend the coldest part of the day.

Tips for visiting Oslo in January

Rain Protection

Keep a small umbrella in your bag and wear shoes that cope with puddles.

Warm Layers

A warm jacket, a hat and gloves for cold mornings and evenings.

Quick questions

How warm is Oslo in January?

It feels freezing: typical highs are -1.4°C (29.5°F), with lows near -6.3°C (20.7°F).

Does it rain a lot in Oslo in January?

Quite a lot — 76 mm spread over about 12 days.

What should I wear in Oslo in January?

Based on the averages: rain protection and warm layers. Evenings feel similar to the day, so the same clothes work from morning to night.

Is January or February better for visiting Oslo?

February, narrowly: it ranks #9 of 12 among Oslo's months, against #11 for the other. February is warmer and has fewer rainy days.

Is January a good time to visit Oslo?

Poor

Poor — cold days, freezing nights, frequent rain (about 12 rainy days), short sunny spells (2.6 h a day). Within Oslo's own year, January ranks #11 of 12 — one of the least comfortable months.

January in other Norway cities

Warmer or drier places in January

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Oslo weather by month.