Sanremo weather by month
Sanremo runs from about 9°C in December to 27°C in August, with October the wettest month at 249 mm.
warmest month
August
27°C
coolest month
December
9°C
wettest month
October
249 mm
worst air month
March
10 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 10°C | 69 mm | 210 h | 6 |
| February | 11°C | 214 mm | 210 h | 7 |
| March | 12°C | 201 mm | 250 h | 10 |
| April | 14°C | 82 mm | 336 h | 9 |
| May | 17°C | 64 mm | 371 h | 6 |
| June | 21°C | 75 mm | 396 h | 8 |
| July | 25°C | 8 mm | 441 h | 6 |
| August | 27°C | 8 mm | 396 h | 8 |
| September | 21°C | 153 mm | 288 h | 6 |
| October | 18°C | 249 mm | 232 h | 6 |
| November | 13°C | 17 mm | 233 h | 5 |
| December | 9°C | 25 mm | 242 h | 7 |
About 3,605 hours of sun a year. Roughly 117 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 2026-05-25. Full method, licences and the list of sources we rejected are on the methodology page.