Oslo weather in 2023
Oslo weather in 2023, with 365 daily observations from Open-Meteo archive data.
Interactive graph
Open Oslo in the interactive graph
Use the graph view to inspect 2023 alongside other available years for Oslo.
Year summary
In 2023, Oslo averaged 9.6 C for daily highs and 2.7 C for daily lows.
A 1991-2020 normal is not available for this location yet, so this page compares 2023 with the 2023-2025 archive baseline. The 2023 average daily high was -0.7 C from that baseline, and total precipitation was +43.0 mm from the baseline total.
The warmest month was June, with an average high of 23.8 C, while December had the lowest average low at -8.4 C.
The wettest month was August, totaling 218.2 mm. The hottest day reached 30.5 C on June 15, 2023.
Monthly averages and precipitation
| Month | Avg low C | Avg high C | Rain and snow mm | Days |
|---|---|---|---|---|
| January | -4.1 | 0.4 | 108.3 | 31 |
| February | -4.0 | 2.6 | 38.5 | 28 |
| March | -6.7 | 1.9 | 67.0 | 31 |
| April | 0.8 | 9.5 | 132.8 | 30 |
| May | 5.4 | 16.6 | 16.7 | 31 |
| June | 12.7 | 23.8 | 59.0 | 30 |
| July | 12.5 | 18.9 | 157.8 | 31 |
| August | 12.8 | 18.5 | 218.2 | 31 |
| September | 11.3 | 17.2 | 97.0 | 30 |
| October | 3.0 | 7.9 | 41.7 | 31 |
| November | -2.6 | 0.8 | 71.1 | 30 |
| December | -8.4 | -3.4 | 53.0 | 31 |
Daily records in 2023
| Record | Date | Value |
|---|---|---|
| Hottest day | June 15, 2023 | 30.5 C |
| Coldest night | March 8, 2023 | -15.1 C |
| Wettest day | August 20, 2023 | 47.6 mm |
Related pages
Weather data source: Open-Meteo Archive API. City metadata source: GeoNames cities15000.