Oslo weather in 2025
Oslo weather in 2025, with 365 daily observations from Open-Meteo archive data.
Interactive graph
Open Oslo in the interactive graph
Use the graph view to inspect 2025 alongside other available years for Oslo.
Year summary
In 2025, Oslo averaged 11.3 C for daily highs and 4.4 C for daily lows.
A 1991-2020 normal is not available for this location yet, so this page compares 2025 with the 2023-2025 archive baseline. The 2025 average daily high was +1.0 C from that baseline, and total precipitation was -132.8 mm from the baseline total.
The warmest month was July, with an average high of 24.1 C, while February had the lowest average low at -6.6 C.
The wettest month was July, totaling 128.4 mm. The hottest day reached 30.2 C on July 20, 2025.
Monthly averages and precipitation
| Month | Avg low C | Avg high C | Rain and snow mm | Days |
|---|---|---|---|---|
| January | -5.9 | -0.8 | 100.9 | 31 |
| February | -6.6 | -0.4 | 32.2 | 28 |
| March | -0.5 | 8.0 | 12.8 | 31 |
| April | 3.4 | 13.4 | 24.8 | 30 |
| May | 7.4 | 16.7 | 36.2 | 31 |
| June | 11.0 | 19.0 | 73.5 | 30 |
| July | 15.6 | 24.1 | 128.4 | 31 |
| August | 12.1 | 20.2 | 66.8 | 31 |
| September | 10.2 | 16.4 | 126.0 | 30 |
| October | 4.9 | 10.0 | 122.2 | 31 |
| November | 1.1 | 5.1 | 74.7 | 30 |
| December | -0.3 | 3.2 | 86.8 | 31 |
Daily records in 2025
| Record | Date | Value |
|---|---|---|
| Hottest day | July 20, 2025 | 30.2 C |
| Coldest night | January 5, 2025 | -18.0 C |
| Wettest day | October 4, 2025 | 45.7 mm |
Related pages
Weather data source: Open-Meteo Archive API. City metadata source: GeoNames cities15000.