Siargao weather by month
Siargao runs from about 26°C in December to 28°C in May, with December the wettest month at 514 mm.
warmest month
May
28°C
coolest month
December
26°C
wettest month
December
514 mm
worst air month
July
8 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 26°C | 186 mm | 296 h | 6 |
| February | 26°C | 111 mm | 295 h | 6 |
| March | 27°C | 93 mm | 351 h | 7 |
| April | 27°C | 126 mm | 344 h | 7 |
| May | 28°C | 166 mm | 358 h | 5 |
| June | 28°C | 233 mm | 289 h | 4 |
| July | 27°C | 374 mm | 286 h | 8 |
| August | 28°C | 198 mm | 327 h | 6 |
| September | 28°C | 160 mm | 272 h | 5 |
| October | 28°C | 193 mm | 302 h | 3 |
| November | 27°C | 218 mm | 296 h | 5 |
| December | 26°C | 514 mm | 223 h | 4 |
About 3,639 hours of sun a year. Roughly 229 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.