Gyumri weather by month
Gyumri runs from about -3°C in January to 20°C in August, with May the wettest month at 190 mm.
warmest month
August
20°C
coolest month
January
-3°C
wettest month
May
190 mm
worst air month
November
14 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -3°C | 46 mm | 187 h | 12 |
| February | -1°C | 14 mm | 252 h | 9 |
| March | 2°C | 79 mm | 257 h | 6 |
| April | 11°C | 34 mm | 323 h | 6 |
| May | 10°C | 190 mm | 323 h | 5 |
| June | 17°C | 36 mm | 393 h | 4 |
| July | 19°C | 60 mm | 397 h | 8 |
| August | 20°C | 24 mm | 386 h | 7 |
| September | 16°C | 25 mm | 320 h | 5 |
| October | 7°C | 105 mm | 281 h | 6 |
| November | 1°C | 37 mm | 236 h | 14 |
| December | -3°C | 7 mm | 238 h | 12 |
About 3,593 hours of sun a year. Roughly 67 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.