Tamarindo weather by month
Tamarindo runs from about 25°C in November to 30°C in March, with November the wettest month at 492 mm.
warmest month
March
30°C
coolest month
November
25°C
wettest month
November
492 mm
worst air month
May
9 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 29°C | 12 mm | 352 h | 5 |
| February | 29°C | 4 mm | 336 h | 7 |
| March | 30°C | 13 mm | 366 h | 7 |
| April | 29°C | 63 mm | 338 h | 8 |
| May | 28°C | 329 mm | 311 h | 9 |
| June | 26°C | 468 mm | 189 h | 7 |
| July | 27°C | 461 mm | 242 h | 7 |
| August | 26°C | 293 mm | 268 h | 7 |
| September | 26°C | 375 mm | 216 h | 5 |
| October | 26°C | 368 mm | 249 h | 4 |
| November | 25°C | 492 mm | 213 h | 4 |
| December | 27°C | 78 mm | 316 h | 5 |
About 3,396 hours of sun a year. Roughly 225 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.