Experience the charm of Oslo, where its unique maritime climate offers four distinct seasons. Summer (June-August) boasts temperatures averaging 15°C (59°F), making it the perfect time to explore lush Frogner Park or take a swim in the Oslofjord. Autumn (September-October) showers the city with vibrant foliage and crisp air, while winter (December-February) brings subzero temperatures, ideal for winter sports at Holmenkollbakken ski jump. Interestingly, Oslo receives more rainfall in summer than London! Don't miss a visit to Vigeland Sculpture Park, especially enchanting under the Northern Lights during winter nights.
Today's Forecast
5-Day Forecast
Oslo Climate & Weather Averages
Oslo is warmest in July, when daytime highs average 21°C, and coldest in January at around -1°C. The wettest month is July. The table below shows the monthly averages for Oslo, based on recorded data from 2015–2024.
| Month | Avg High | Avg Low | Rainfall |
|---|---|---|---|
| Jan | -1° | -6° | 73 mm |
| Feb | 1° | -5° | 60 mm |
| Mar | 5° | -3° | 58 mm |
| Apr | 10° | 1° | 50 mm |
| May | 16° | 7° | 78 mm |
| Jun | 20° | 12° | 86 mm |
| Jul | 21° | 13° | 111 mm |
| Aug | 20° | 12° | 94 mm |
| Sep | 16° | 10° | 101 mm |
| Oct | 10° | 5° | 83 mm |
| Nov | 4° | 0° | 80 mm |
| Dec | 1° | -4° | 67 mm |
Best time to visit: June–August offers the most comfortable conditions, with daytime highs around 20°C. Pack light, breathable layers and a light waterproof — Oslo sees rain year-round, peaking in July. For the coldest spell around January, bring a warm coat.
Source: Open-Meteo ERA5 archive. Averages computed from daily records.