Mykonos weather by month
Mykonos runs from about 13°C in January to 27°C in July, with December the wettest month at 143 mm.
warmest month
July
27°C
coolest month
January
13°C
wettest month
December
143 mm
worst air month
July
10 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 13°C | 60 mm | 221 h | 5 |
| February | 14°C | 61 mm | 246 h | 6 |
| March | 15°C | 24 mm | 316 h | 9 |
| April | 19°C | 13 mm | 353 h | 9 |
| May | 20°C | 19 mm | 371 h | 8 |
| June | 26°C | 0 mm | 418 h | 9 |
| July | 27°C | 23 mm | 422 h | 10 |
| August | 27°C | 3 mm | 399 h | 10 |
| September | 25°C | 4 mm | 353 h | 9 |
| October | 21°C | 1 mm | 310 h | 5 |
| November | 16°C | 25 mm | 265 h | 7 |
| December | 14°C | 143 mm | 229 h | 7 |
About 3,903 hours of sun a year. Roughly 36 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.