Montego Bay weather by month
Montego Bay runs from about 24°C in February to 27°C in July, with July the wettest month at 186 mm.
warmest month
July
27°C
coolest month
February
24°C
wettest month
July
186 mm
worst air month
June
16 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 25°C | 30 mm | 332 h | 6 |
| February | 24°C | 47 mm | 310 h | 7 |
| March | 25°C | 38 mm | 352 h | 6 |
| April | 26°C | 53 mm | 357 h | 6 |
| May | 27°C | 97 mm | 361 h | 12 |
| June | 27°C | 183 mm | 284 h | 16 |
| July | 27°C | 186 mm | 351 h | 13 |
| August | 27°C | 143 mm | 342 h | 10 |
| September | 27°C | 155 mm | 303 h | 8 |
| October | 27°C | 149 mm | 331 h | 6 |
| November | 25°C | 162 mm | 251 h | 6 |
| December | 25°C | 58 mm | 301 h | 6 |
About 3,875 hours of sun a year. Roughly 131 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.