Milan weather by month
Milan runs from about 3°C in January to 26°C in August, with May the wettest month at 372 mm.
warmest month
August
26°C
coolest month
January
3°C
wettest month
May
372 mm
worst air month
December
58 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 3°C | 49 mm | 169 h | 57 |
| February | 8°C | 223 mm | 179 h | 40 |
| March | 11°C | 208 mm | 210 h | 33 |
| April | 13°C | 79 mm | 300 h | 18 |
| May | 17°C | 372 mm | 293 h | 12 |
| June | 21°C | 193 mm | 351 h | 10 |
| July | 25°C | 112 mm | 413 h | 9 |
| August | 26°C | 69 mm | 382 h | 12 |
| September | 19°C | 180 mm | 271 h | 16 |
| October | 15°C | 256 mm | 152 h | 26 |
| November | 7°C | 10 mm | 175 h | 42 |
| December | 4°C | 30 mm | 183 h | 58 |
About 3,078 hours of sun a year. Roughly 171 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.