Guayaquil weather by month
Guayaquil runs from about 24°C in September to 28°C in April, with February the wettest month at 309 mm.
warmest month
April
28°C
coolest month
September
24°C
wettest month
February
309 mm
worst air month
December
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 27°C | 90 mm | 298 h | 9 |
| February | 27°C | 309 mm | 275 h | 7 |
| March | 27°C | 88 mm | 317 h | 9 |
| April | 28°C | 43 mm | 301 h | 11 |
| May | 27°C | 16 mm | 297 h | 10 |
| June | 26°C | 7 mm | 301 h | 11 |
| July | 25°C | 5 mm | 326 h | 10 |
| August | 25°C | 2 mm | 321 h | 10 |
| September | 24°C | 0 mm | 338 h | 10 |
| October | 25°C | 1 mm | 343 h | 10 |
| November | 25°C | 0 mm | 340 h | 10 |
| December | 27°C | 59 mm | 314 h | 12 |
About 3,771 hours of sun a year. Roughly 62 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.