La Fortuna weather by month
La Fortuna runs from about 23°C in December to 26°C in May, with November the wettest month at 847 mm.
warmest month
May
26°C
coolest month
December
23°C
wettest month
November
847 mm
worst air month
May
6 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 24°C | 313 mm | 290 h | 3 |
| February | 23°C | 299 mm | 246 h | 4 |
| March | 25°C | 110 mm | 338 h | 5 |
| April | 25°C | 248 mm | 311 h | 5 |
| May | 26°C | 200 mm | 299 h | 6 |
| June | 25°C | 551 mm | 212 h | 5 |
| July | 24°C | 339 mm | 194 h | 4 |
| August | 24°C | 253 mm | 259 h | 6 |
| September | 25°C | 500 mm | 222 h | 5 |
| October | 24°C | 482 mm | 214 h | 4 |
| November | 24°C | 847 mm | 170 h | 2 |
| December | 23°C | 781 mm | 173 h | 3 |
About 2,928 hours of sun a year. Roughly 321 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 2026-05-25. Full method, licences and the list of sources we rejected are on the methodology page.