Vilnius weather by month
Vilnius runs from about -5°C in January to 20°C in July, with July the wettest month at 171 mm.
warmest month
July
20°C
coolest month
January
-5°C
wettest month
July
171 mm
worst air month
March
14 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -5°C | 58 mm | 65 h | 14 |
| February | 2°C | 77 mm | 79 h | 13 |
| March | 4°C | 25 mm | 223 h | 14 |
| April | 9°C | 92 mm | 219 h | 6 |
| May | 15°C | 48 mm | 420 h | 5 |
| June | 18°C | 70 mm | 385 h | 5 |
| July | 20°C | 171 mm | 359 h | 5 |
| August | 19°C | 43 mm | 384 h | 5 |
| September | 17°C | 37 mm | 288 h | 7 |
| October | 8°C | 55 mm | 144 h | 8 |
| November | 3°C | 46 mm | 57 h | 14 |
| December | 1°C | 45 mm | 42 h | 12 |
About 2,665 hours of sun a year. Roughly 79 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 2026-05-23. Full method, licences and the list of sources we rejected are on the methodology page.