Oslo, Norway Climate & Monthly Averages
The climate of Oslo
Oslo has a humid continental climate, marked by warm summers and cold, often snowy winters. Average daytime highs range from about 31°F (-1°C) in January to around 70°F (21°C) in July, and the city records roughly 136 days of measurable precipitation a year.
Climate quick facts
- Hottest month: July - highs near 70°F (21°C)
- Coldest month: January - highs near 31°F (-1°C)
- Record high: 90°F (32°C) · Record low: -18°F (-28°C) (2015–2024)
- Wettest month: July (13 rainy days) · Sunniest: June (13.1 h sun/day)
- Climate type: humid continental - warm summers and cold, often snowy winters
- Snow: about 31 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 70°F (21°C) and overnight lows stay near 56°F (13°C). The coolest month is January, with typical highs of 31°F (-1°C) and lows around 22°F (-6°C). Based on 2015–2024 weather data, temperatures have reached as high as 90°F (32°C) and dropped as low as -18°F (-28°C).
Rain, sun and snow
July is usually the wettest month. It brings about 4.4 inches (112 mm) of rain over 13 days, while April is the driest. June brings the most sunshine, averaging 13.1 hours of sun a day. Snow falls on about 31 days in a typical year, mostly from October through May.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 31° | 22° | 12 | 2.9 in | 2.7 h/day | 85% |
| February | 34° | 24° | 10 | 2.3 in | 4.7 h/day | 82% |
| March | 40° | 27° | 9 | 2.3 in | 7.1 h/day | 78% |
| April | 50° | 34° | 8 | 1.9 in | 10.3 h/day | 66% |
| May | 61° | 44° | 12 | 3.1 in | 11.7 h/day | 66% |
| June | 69° | 53° | 12 | 3.4 in | 13.1 h/day | 67% |
| July | 70° | 56° | 13 | 4.4 in | 12.5 h/day | 71% |
| August | 68° | 54° | 13 | 3.7 in | 10.5 h/day | 76% |
| September | 61° | 49° | 11 | 4.0 in | 7.5 h/day | 80% |
| October | 49° | 40° | 12 | 3.3 in | 4.8 h/day | 85% |
| November | 39° | 33° | 12 | 3.2 in | 2.6 h/day | 88% |
| December | 33° | 25° | 13 | 2.6 in | 1.9 h/day | 88% |
Oslo month by month
Oslo weather in January
January brings highs around 31°F (-1°C), lows near 22°F (-6°C), about 12 wet days and roughly 8 snowy days - typically the coldest month of the year in Oslo.
Oslo weather in February
February brings highs around 34°F (1°C), lows near 24°F (-5°C), about 10 wet days and roughly 7 snowy days.
Oslo weather in March
March brings highs around 40°F (5°C), lows near 27°F (-3°C), about 9 wet days and roughly 4 snowy days.
Oslo weather in April
April brings highs around 50°F (10°C), lows near 34°F (1°C), about 8 wet days and roughly 1 snowy days - typically the driest month of the year in Oslo.
Oslo weather in May
May brings highs around 61°F (16°C), lows near 44°F (7°C), about 12 wet days.
Oslo weather in June
June brings highs around 69°F (20°C), lows near 53°F (12°C), about 12 wet days - typically the sunniest month of the year in Oslo.
Oslo weather in July
July brings highs around 70°F (21°C), lows near 56°F (13°C), about 13 wet days - typically the hottest month and the wettest month of the year in Oslo.
Oslo weather in August
August brings highs around 68°F (20°C), lows near 54°F (12°C), about 13 wet days.
Oslo weather in September
September brings highs around 61°F (16°C), lows near 49°F (10°C), about 11 wet days.
Oslo weather in October
October brings highs around 49°F (10°C), lows near 40°F (5°C), about 12 wet days.
Oslo weather in November
November brings highs around 39°F (4°C), lows near 33°F (0°C), about 12 wet days and roughly 3 snowy days.
Oslo weather in December
December brings highs around 33°F (1°C), lows near 25°F (-4°C), about 13 wet days and roughly 6 snowy days.
Seasons in Oslo
Spring (March through May)
Spring in Oslo runs cold, with daytime highs averaging 51°F (10°C) and nights around 35°F (2°C); expect showers on roughly 30 days across the season, plus around 6 snowy days.
Summer (June through August)
Summer in Oslo is pleasantly warm, with daytime highs averaging 69°F (20°C) and nights around 54°F (12°C); expect showers on roughly 37 days across the season.
Fall (September through November)
Fall in Oslo runs cold, with daytime highs averaging 50°F (10°C) and nights around 41°F (5°C); expect showers on roughly 35 days across the season, plus around 3 snowy days.
Winter (December through February)
Winter in Oslo brings deep cold, with daytime highs averaging 33°F (0°C) and nights around 24°F (-5°C); expect showers on roughly 35 days across the season, plus around 22 snowy days. Wind makes those temperatures feel harsher than they sound - pair the forecast winds with the wind speed converter to judge conditions on exposed skin.
Climate questions, answered
What is the average temperature in Oslo?
Is Oslo hot in summer?
Is Oslo cold in winter?
How many rainy days does Oslo get in a year?
Best time to visit Oslo
The best time to visit Oslo is generally April to September, when this window offers the warmest, brightest days of the year. Daytime temperatures in that window typically sit near 63°F (17°C).
Pack for Oslo with a heavy insulated coat, hat and gloves for winter; a compact umbrella or rain shell - showers are a regular feature. Evenings can feel noticeably cooler than afternoons - July nights average 56°F (13°C).
Oslo temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.