Oslo weather in December
December is one of the least pleasant months in Oslo: highs of -3°C (27°F) and about 78 mm (3.1 in) of rain on average. Nights average -7°C (19°F) and cloud cover 82% (NASA POWER, 2001–2025 averages). It is the 4th driest month of the year and the 2nd coolest. Compared with November, it is cooler and drier; January brings highs of -3°C (26°F) and 78 mm (3.1 in) of rain.
Is December a good time to visit Oslo?
least pleasant month Weather score 31/100.
December is one of the least pleasant months for weather in Oslo. For better conditions, consider Jun–Aug.
Does it rain a lot in Oslo in December?
Some rain is normal: about 78 mm (3.1 in) falls in an average December. It is the 4th driest month of the year.
How warm is Oslo in December?
Days average -3°C (27°F) and nights -7°C (19°F).
Oslo weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | -3°C (26°F) | -8°C (17°F) | 78 mm | 83% | least pleasant |
| February | -2°C (28°F) | -8°C (17°F) | 60 mm | 82% | least pleasant |
| March | 2°C (35°F) | -5°C (22°F) | 56 mm | 74% | least pleasant |
| April | 8°C (47°F) | 0°C (32°F) | 61 mm | 70% | fair |
| May | 14°C (58°F) | 5°C (41°F) | 92 mm | 68% | fair |
| June | 18°C (65°F) | 9°C (49°F) | 96 mm | 68% | best |
| July | 20°C (69°F) | 12°C (53°F) | 112 mm | 71% | best |
| August | 19°C (66°F) | 11°C (51°F) | 122 mm | 71% | best |
| September | 14°C (58°F) | 7°C (44°F) | 96 mm | 73% | fair |
| October | 7°C (45°F) | 2°C (35°F) | 104 mm | 77% | least pleasant |
| November | 2°C (35°F) | -3°C (27°F) | 94 mm | 82% | least pleasant |
| December | -3°C (27°F) | -7°C (19°F) | 78 mm | 82% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months