Hamburg weather by month
Hamburg runs from about 2°C in January to 19°C in August, with February the wettest month at 114 mm.
warmest month
August
19°C
coolest month
January
2°C
wettest month
February
114 mm
worst air month
March
15 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 2°C | 101 mm | 100 h | 14 |
| February | 6°C | 114 mm | 105 h | 14 |
| March | 8°C | 42 mm | 208 h | 15 |
| April | 10°C | 87 mm | 243 h | 8 |
| May | 16°C | 96 mm | 375 h | 7 |
| June | 16°C | 99 mm | 335 h | 7 |
| July | 18°C | 75 mm | 370 h | 6 |
| August | 19°C | 56 mm | 327 h | 8 |
| September | 16°C | 88 mm | 297 h | 7 |
| October | 11°C | 90 mm | 191 h | 7 |
| November | 6°C | 84 mm | 92 h | 12 |
| December | 5°C | 48 mm | 41 h | 13 |
About 2,684 hours of sun a year. Roughly 99 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 2026-05-22. Full method, licences and the list of sources we rejected are on the methodology page.