Bagan weather by month
Bagan runs from about 21°C in January to 34°C in April, with September the wettest month at 503 mm.
warmest month
April
34°C
coolest month
January
21°C
wettest month
September
503 mm
worst air month
March
39 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 21°C | 0 mm | 315 h | 18 |
| February | 24°C | 0 mm | 307 h | 27 |
| March | 28°C | 2 mm | 335 h | 39 |
| April | 34°C | 0 mm | 337 h | 38 |
| May | 32°C | 67 mm | 359 h | 17 |
| June | 31°C | 80 mm | 314 h | 9 |
| July | 30°C | 93 mm | 308 h | 7 |
| August | 29°C | 159 mm | 254 h | 8 |
| September | 28°C | 503 mm | 232 h | 10 |
| October | 28°C | 174 mm | 290 h | 12 |
| November | 26°C | 43 mm | 302 h | 13 |
| December | 24°C | 0 mm | 321 h | 13 |
About 3,674 hours of sun a year. Roughly 91 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.