Oviedo weather by month
Oviedo runs from about 8°C in December to 19°C in August, with October the wettest month at 180 mm.
warmest month
August
19°C
coolest month
December
8°C
wettest month
October
180 mm
worst air month
March
11 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 8°C | 89 mm | 191 h | 5 |
| February | 10°C | 162 mm | 182 h | 7 |
| March | 10°C | 123 mm | 255 h | 11 |
| April | 11°C | 72 mm | 257 h | 10 |
| May | 13°C | 140 mm | 296 h | 8 |
| June | 16°C | 117 mm | 223 h | 9 |
| July | 19°C | 59 mm | 321 h | 7 |
| August | 19°C | 50 mm | 249 h | 10 |
| September | 15°C | 134 mm | 252 h | 6 |
| October | 15°C | 180 mm | 220 h | 6 |
| November | 13°C | 72 mm | 219 h | 5 |
| December | 8°C | 103 mm | 193 h | 7 |
About 2,858 hours of sun a year. Roughly 129 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 2026-05-24. Full method, licences and the list of sources we rejected are on the methodology page.