Berlin weather by month
Berlin runs from about 1°C in January to 21°C in August, with May the wettest month at 94 mm.
warmest month
August
21°C
coolest month
January
1°C
wettest month
May
94 mm
worst air month
January
15 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 1°C | 57 mm | 104 h | 15 |
| February | 7°C | 87 mm | 108 h | 14 |
| March | 8°C | 34 mm | 242 h | 13 |
| April | 11°C | 43 mm | 283 h | 8 |
| May | 17°C | 94 mm | 387 h | 7 |
| June | 18°C | 65 mm | 372 h | 6 |
| July | 20°C | 59 mm | 370 h | 6 |
| August | 21°C | 18 mm | 364 h | 7 |
| September | 18°C | 44 mm | 274 h | 6 |
| October | 11°C | 49 mm | 196 h | 7 |
| November | 5°C | 60 mm | 97 h | 12 |
| December | 4°C | 37 mm | 52 h | 14 |
About 2,849 hours of sun a year. Roughly 65 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.