Historical weather in Oslo, Norway
Oslo weather history for 2023-2025, with daily temperatures, precipitation, monthly summaries, and records from Open-Meteo archive data.
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Weather summary
Across 2023-2025, Oslo averaged 10.3 C for daily highs and 3.5 C for daily lows across 1096 daily observations.
The warmest month was July 2025, with an average high of 24.1 C, while January 2024 had the lowest average low at -11.7 C.
The wettest month was August 2023, totaling 218.2 mm of precipitation.
The hottest day reached 30.5 C on June 15, 2023; the coldest night fell to -27.9 C on January 6, 2024.
Monthly summary table
| Year | Month | Avg low C | Avg high C | Rain and snow mm | Days |
|---|---|---|---|---|---|
| 2023 | January | -4.1 | 0.4 | 108.3 | 31 |
| 2023 | February | -4.0 | 2.6 | 38.5 | 28 |
| 2023 | March | -6.7 | 1.9 | 67.0 | 31 |
| 2023 | April | 0.8 | 9.5 | 132.8 | 30 |
| 2023 | May | 5.4 | 16.6 | 16.7 | 31 |
| 2023 | June | 12.7 | 23.8 | 59.0 | 30 |
| 2023 | July | 12.5 | 18.9 | 157.8 | 31 |
| 2023 | August | 12.8 | 18.5 | 218.2 | 31 |
| 2023 | September | 11.3 | 17.2 | 97.0 | 30 |
| 2023 | October | 3.0 | 7.9 | 41.7 | 31 |
| 2023 | November | -2.6 | 0.8 | 71.1 | 30 |
| 2023 | December | -8.4 | -3.4 | 53.0 | 31 |
| 2024 | January | -11.7 | -4.4 | 91.1 | 31 |
| 2024 | February | -5.8 | -0.2 | 91.4 | 29 |
| 2024 | March | -0.6 | 4.6 | 85.7 | 31 |
| 2024 | April | 0.8 | 8.9 | 61.0 | 30 |
| 2024 | May | 9.5 | 20.3 | 77.8 | 31 |
| 2024 | June | 10.8 | 18.3 | 137.8 | 30 |
| 2024 | July | 12.4 | 19.4 | 186.1 | 31 |
| 2024 | August | 12.6 | 19.1 | 122.3 | 31 |
| 2024 | September | 9.2 | 16.0 | 107.3 | 30 |
| 2024 | October | 4.9 | 10.5 | 63.9 | 31 |
| 2024 | November | -0.3 | 4.4 | 30.4 | 30 |
| 2024 | December | -2.2 | 2.3 | 53.2 | 31 |
| 2025 | January | -5.9 | -0.8 | 100.9 | 31 |
| 2025 | February | -6.6 | -0.4 | 32.2 | 28 |
| 2025 | March | -0.5 | 8.0 | 12.8 | 31 |
| 2025 | April | 3.4 | 13.4 | 24.8 | 30 |
| 2025 | May | 7.4 | 16.7 | 36.2 | 31 |
| 2025 | June | 11.0 | 19.0 | 73.5 | 30 |
| 2025 | July | 15.6 | 24.1 | 128.4 | 31 |
| 2025 | August | 12.1 | 20.2 | 66.8 | 31 |
| 2025 | September | 10.2 | 16.4 | 126.0 | 30 |
| 2025 | October | 4.9 | 10.0 | 122.2 | 31 |
| 2025 | November | 1.1 | 5.1 | 74.7 | 30 |
| 2025 | December | -0.3 | 3.2 | 86.8 | 31 |
Daily weather records
| Record | Date | Value |
|---|---|---|
| Hottest day | June 15, 2023 | 30.5 C |
| Coldest night | January 6, 2024 | -27.9 C |
| Wettest day | August 20, 2023 | 47.6 mm |
Related pages
Weather data source: Open-Meteo Archive API. City metadata source: GeoNames cities15000.