Iloilo weather by month
Iloilo runs from about 26°C in December to 31°C in May, with July the wettest month at 449 mm.
warmest month
May
31°C
coolest month
December
26°C
wettest month
July
449 mm
worst air month
June
20 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 27°C | 40 mm | 340 h | 9 |
| February | 27°C | 31 mm | 323 h | 7 |
| March | 29°C | 8 mm | 364 h | 10 |
| April | 30°C | 14 mm | 358 h | 14 |
| May | 31°C | 69 mm | 346 h | 18 |
| June | 28°C | 312 mm | 292 h | 20 |
| July | 27°C | 449 mm | 250 h | 11 |
| August | 27°C | 208 mm | 319 h | 13 |
| September | 27°C | 305 mm | 257 h | 8 |
| October | 26°C | 372 mm | 240 h | 7 |
| November | 27°C | 93 mm | 312 h | 7 |
| December | 26°C | 149 mm | 265 h | 6 |
About 3,666 hours of sun a year. Roughly 181 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.