Chiclayo weather by month
Chiclayo runs from about 19°C in August to 27°C in February, with December the wettest month at 25 mm.
warmest month
February
27°C
coolest month
August
19°C
wettest month
December
25 mm
worst air month
July
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 25°C | 9 mm | 349 h | 10 |
| February | 27°C | 7 mm | 325 h | 10 |
| March | 26°C | 0 mm | 340 h | 11 |
| April | 24°C | 6 mm | 333 h | 11 |
| May | 21°C | 3 mm | 336 h | 10 |
| June | 19°C | 0 mm | 317 h | 12 |
| July | 19°C | 0 mm | 323 h | 12 |
| August | 19°C | 0 mm | 327 h | 12 |
| September | 19°C | 2 mm | 305 h | 12 |
| October | 20°C | 0 mm | 337 h | 12 |
| November | 20°C | 7 mm | 311 h | 11 |
| December | 22°C | 25 mm | 347 h | 10 |
About 3,950 hours of sun a year. Roughly 7 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.