San Pedro weather by month
San Pedro runs from about 25°C in February to 29°C in September, with October the wettest month at 511 mm.
warmest month
September
29°C
coolest month
February
25°C
wettest month
October
511 mm
worst air month
June
15 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 26°C | 88 mm | 319 h | 5 |
| February | 25°C | 25 mm | 311 h | 7 |
| March | 27°C | 9 mm | 365 h | 7 |
| April | 28°C | 31 mm | 353 h | 7 |
| May | 29°C | 3 mm | 366 h | 11 |
| June | 29°C | 324 mm | 261 h | 15 |
| July | 29°C | 195 mm | 325 h | 11 |
| August | 29°C | 198 mm | 333 h | 8 |
| September | 29°C | 168 mm | 331 h | 5 |
| October | 28°C | 511 mm | 255 h | 5 |
| November | 27°C | 257 mm | 301 h | 5 |
| December | 26°C | 152 mm | 275 h | 5 |
About 3,795 hours of sun a year. Roughly 174 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.