Copenhagen weather by month
Copenhagen runs from about 1°C in January to 18°C in August, with February the wettest month at 89 mm.
warmest month
August
18°C
coolest month
January
1°C
wettest month
February
89 mm
worst air month
March
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 1°C | 75 mm | 97 h | 8 |
| February | 4°C | 89 mm | 94 h | 7 |
| March | 5°C | 32 mm | 176 h | 12 |
| April | 7°C | 82 mm | 250 h | 7 |
| May | 14°C | 24 mm | 406 h | 5 |
| June | 15°C | 58 mm | 376 h | 5 |
| July | 17°C | 85 mm | 361 h | 5 |
| August | 18°C | 58 mm | 359 h | 6 |
| September | 16°C | 70 mm | 303 h | 5 |
| October | 11°C | 50 mm | 185 h | 5 |
| November | 7°C | 38 mm | 93 h | 9 |
| December | 5°C | 44 mm | 41 h | 8 |
About 2,741 hours of sun a year. Roughly 71 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-23. Full method, licences and the list of sources we rejected are on the methodology page.