Belize City weather by month
Belize City runs from about 25°C in December to 30°C in May, with October the wettest month at 492 mm.
warmest month
May
30°C
coolest month
December
25°C
wettest month
October
492 mm
worst air month
June
14 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 26°C | 90 mm | 314 h | 6 |
| February | 25°C | 30 mm | 311 h | 7 |
| March | 27°C | 34 mm | 364 h | 8 |
| April | 28°C | 75 mm | 350 h | 8 |
| May | 30°C | 21 mm | 365 h | 11 |
| June | 28°C | 389 mm | 261 h | 14 |
| July | 28°C | 285 mm | 312 h | 12 |
| August | 28°C | 212 mm | 326 h | 8 |
| September | 28°C | 150 mm | 330 h | 5 |
| October | 26°C | 492 mm | 257 h | 5 |
| November | 26°C | 213 mm | 299 h | 5 |
| December | 25°C | 216 mm | 261 h | 5 |
About 3,750 hours of sun a year. Roughly 193 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.