Isfahan weather by month
Isfahan runs from about 5°C in December to 32°C in July, with February the wettest month at 45 mm.
warmest month
July
32°C
coolest month
December
5°C
wettest month
February
45 mm
worst air month
November
49 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 6°C | 6 mm | 284 h | 34 |
| February | 5°C | 45 mm | 240 h | 27 |
| March | 9°C | 45 mm | 304 h | 25 |
| April | 16°C | 24 mm | 326 h | 18 |
| May | 22°C | 12 mm | 372 h | 23 |
| June | 28°C | 5 mm | 369 h | 22 |
| July | 32°C | 0 mm | 392 h | 25 |
| August | 32°C | 0 mm | 381 h | 19 |
| September | 25°C | 1 mm | 335 h | 28 |
| October | 18°C | 1 mm | 317 h | 32 |
| November | 13°C | 12 mm | 280 h | 49 |
| December | 5°C | 5 mm | 275 h | 38 |
About 3,875 hours of sun a year. Roughly 17 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.