Utila weather by month
Utila runs from about 25°C in December to 29°C in May, with November the wettest month at 539 mm.
warmest month
May
29°C
coolest month
December
25°C
wettest month
November
539 mm
worst air month
May
10 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 26°C | 112 mm | 287 h | 6 |
| February | 25°C | 66 mm | 308 h | 7 |
| March | 27°C | 44 mm | 357 h | 7 |
| April | 28°C | 39 mm | 354 h | 7 |
| May | 29°C | 2 mm | 374 h | 10 |
| June | 29°C | 127 mm | 298 h | 10 |
| July | 28°C | 151 mm | 339 h | 10 |
| August | 28°C | 172 mm | 355 h | 7 |
| September | 29°C | 196 mm | 320 h | 5 |
| October | 27°C | 481 mm | 257 h | 5 |
| November | 27°C | 539 mm | 265 h | 4 |
| December | 25°C | 528 mm | 236 h | 4 |
About 3,750 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.