Oslo, Norway climate
Cfb Oceanic / temperate
Oslo has a seasonal cold-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 23°C, while the coldest is January averaging around −5°C at night. Around 835 mm of precipitation falls each year, peaking in August (103 mm) and easing off in March (42 mm). At latitude 60°N, day length swings from 5.6 hours in midwinter to 18.4 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsOslo climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 0 | 1 | 5 | 11 | 17 | 20 | 23 | 21 | 16 | 10 | 4 | 1 |
| Avg temp (°C) | −2 | −2 | 2 | 7 | 12 | 16 | 18 | 17 | 13 | 7 | 2 | −1 |
| Avg low (°C) | −5 | −5 | −2 | 2 | 7 | 11 | 13 | 13 | 9 | 4 | 0 | −4 |
| Precipitation (mm) | 58 | 46 | 42 | 48 | 59 | 80 | 87 | 103 | 83 | 94 | 83 | 53 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 0 | 1 | 5 | 11 | 17 | 20 |
| Avg temp (°C) | −2 | −2 | 2 | 7 | 12 | 16 |
| Avg low (°C) | −5 | −5 | −2 | 2 | 7 | 11 |
| Precipitation (mm) | 58 | 46 | 42 | 48 | 59 | 80 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 23 | 21 | 16 | 10 | 4 | 1 |
| Avg temp (°C) | 18 | 17 | 13 | 7 | 2 | −1 |
| Avg low (°C) | 13 | 13 | 9 | 4 | 0 | −4 |
| Precipitation (mm) | 87 | 103 | 83 | 94 | 83 | 53 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 12 | 10 | 11 | 12 | 13 | 14 | 14 | 12 | 14 | 15 | 14 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | — | 0.3 | — | — | — | — | — |
| Days with low ≤ 0°C (days) | 26 | 24 | 22 | 8 | 0.8 | — | — | — | 0.2 | 6 | 15 | 24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 12 | 10 | 11 | 12 | 13 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | — |
| Days with low ≤ 0°C (days) | 26 | 24 | 22 | 8 | 0.8 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 14 | 12 | 14 | 15 | 14 |
| Days with high ≥ 32°C (days) | 0.3 | — | — | — | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.2 | 6 | 15 | 24 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 75 | 69 | 68 | 65 | 67 | 68 | 68 | 70 | 73 | 76 | 76 |
| Clear days (≤ 30% cloud) | 2 | 2 | 3 | 3 | 5 | 3 | 3 | 3 | 3 | 2 | 2 | 2 |
| Partly cloudy days (30–70%) | 8 | 8 | 11 | 11 | 11 | 11 | 11 | 11 | 9 | 9 | 8 | 9 |
| Cloudy days (≥ 70%) | 22 | 18 | 17 | 16 | 15 | 16 | 17 | 16 | 18 | 20 | 20 | 21 |
| Relative humidity (%) | 98 | 98 | 93 | 83 | 78 | 78 | 80 | 84 | 87 | 93 | 97 | 97 |
| Wind speed (km/h) | 1.1 | 1.0 | 1.2 | 1.2 | 1.2 | 1.2 | 1.1 | 1.2 | 1.3 | 1.2 | 1.0 | 1.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 75 | 69 | 68 | 65 | 67 |
| Clear days (≤ 30% cloud) | 2 | 2 | 3 | 3 | 5 | 3 |
| Partly cloudy days (30–70%) | 8 | 8 | 11 | 11 | 11 | 11 |
| Cloudy days (≥ 70%) | 22 | 18 | 17 | 16 | 15 | 16 |
| Relative humidity (%) | 98 | 98 | 93 | 83 | 78 | 78 |
| Wind speed (km/h) | 1.1 | 1.0 | 1.2 | 1.2 | 1.2 | 1.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 68 | 70 | 73 | 76 | 76 |
| Clear days (≤ 30% cloud) | 3 | 3 | 3 | 2 | 2 | 2 |
| Partly cloudy days (30–70%) | 11 | 11 | 9 | 9 | 8 | 9 |
| Cloudy days (≥ 70%) | 17 | 16 | 18 | 20 | 20 | 21 |
| Relative humidity (%) | 80 | 84 | 87 | 93 | 97 | 97 |
| Wind speed (km/h) | 1.1 | 1.2 | 1.3 | 1.2 | 1.0 | 1.1 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Oslo Blindern, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.