Raja Ampat weather by month
Raja Ampat runs from about 27°C in August to 28°C in March, with August the wettest month at 591 mm.
warmest month
March
28°C
coolest month
August
27°C
wettest month
August
591 mm
worst air month
April
6 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 28°C | 364 mm | 272 h | 6 |
| February | 28°C | 115 mm | 301 h | 4 |
| March | 28°C | 249 mm | 314 h | 6 |
| April | 28°C | 275 mm | 300 h | 6 |
| May | 28°C | 428 mm | 284 h | 3 |
| June | 27°C | 539 mm | 254 h | 4 |
| July | 27°C | 379 mm | 286 h | 4 |
| August | 27°C | 591 mm | 291 h | 3 |
| September | 28°C | 262 mm | 308 h | 3 |
| October | 28°C | 362 mm | 313 h | 3 |
| November | 28°C | 251 mm | 311 h | 5 |
| December | 28°C | 300 mm | 288 h | 4 |
About 3,522 hours of sun a year. Roughly 326 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.