Cali weather by month
Cali runs from about 22°C in June to 24°C in September, with May the wettest month at 339 mm.
warmest month
September
24°C
coolest month
June
22°C
wettest month
May
339 mm
worst air month
March
11 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 23°C | 87 mm | 347 h | 7 |
| February | 23°C | 203 mm | 283 h | 7 |
| March | 23°C | 147 mm | 324 h | 11 |
| April | 23°C | 214 mm | 279 h | 9 |
| May | 22°C | 339 mm | 253 h | 8 |
| June | 22°C | 260 mm | 283 h | 7 |
| July | 22°C | 134 mm | 333 h | 10 |
| August | 22°C | 145 mm | 331 h | 9 |
| September | 24°C | 117 mm | 322 h | 8 |
| October | 22°C | 276 mm | 278 h | 7 |
| November | 22°C | 257 mm | 259 h | 6 |
| December | 22°C | 228 mm | 313 h | 7 |
About 3,605 hours of sun a year. Roughly 238 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.