Maceio weather by month
Maceio runs from about 25°C in July to 28°C in March, with May the wettest month at 271 mm.
warmest month
March
28°C
coolest month
July
25°C
wettest month
May
271 mm
worst air month
December
10 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 28°C | 39 mm | 377 h | 10 |
| February | 28°C | 71 mm | 316 h | 8 |
| March | 28°C | 126 mm | 339 h | 7 |
| April | 27°C | 114 mm | 325 h | 8 |
| May | 26°C | 271 mm | 292 h | 8 |
| June | 25°C | 194 mm | 291 h | 9 |
| July | 25°C | 169 mm | 307 h | 9 |
| August | 25°C | 75 mm | 336 h | 9 |
| September | 25°C | 73 mm | 326 h | 10 |
| October | 26°C | 33 mm | 370 h | 10 |
| November | 27°C | 30 mm | 357 h | 10 |
| December | 27°C | 47 mm | 380 h | 10 |
About 4,016 hours of sun a year. Roughly 124 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.