Mestia weather by month
Mestia runs from about -4°C in January to 19°C in July, with January the wettest month at 230 mm.
warmest month
July
19°C
coolest month
January
-4°C
wettest month
January
230 mm
worst air month
August
6 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -4°C | 230 mm | 148 h | 3 |
| February | -1°C | 140 mm | 186 h | 3 |
| March | 1°C | 149 mm | 218 h | 3 |
| April | 9°C | 23 mm | 364 h | 3 |
| May | 9°C | 204 mm | 272 h | 3 |
| June | 16°C | 148 mm | 385 h | 3 |
| July | 19°C | 121 mm | 374 h | 5 |
| August | 18°C | 55 mm | 386 h | 6 |
| September | 15°C | 85 mm | 300 h | 3 |
| October | 7°C | 221 mm | 203 h | 3 |
| November | 0°C | 135 mm | 187 h | 5 |
| December | -4°C | 139 mm | 169 h | 3 |
About 3,192 hours of sun a year. Roughly 166 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 2026-05-27. Full method, licences and the list of sources we rejected are on the methodology page.