Oxford weather by month
Oxford runs from about 5°C in January to 18°C in August, with September the wettest month at 178 mm.
warmest month
August
18°C
coolest month
January
5°C
wettest month
September
178 mm
worst air month
March
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 5°C | 58 mm | 137 h | 7 |
| February | 8°C | 123 mm | 102 h | 6 |
| March | 8°C | 105 mm | 180 h | 12 |
| April | 9°C | 78 mm | 238 h | 8 |
| May | 14°C | 87 mm | 301 h | 8 |
| June | 15°C | 21 mm | 369 h | 6 |
| July | 17°C | 76 mm | 321 h | 5 |
| August | 18°C | 34 mm | 269 h | 6 |
| September | 14°C | 178 mm | 212 h | 5 |
| October | 12°C | 77 mm | 162 h | 7 |
| November | 8°C | 98 mm | 115 h | 5 |
| December | 7°C | 49 mm | 66 h | 7 |
About 2,472 hours of sun a year. Roughly 100 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 2026-05-23. Full method, licences and the list of sources we rejected are on the methodology page.