Burlington weather by month
Burlington runs from about -3°C in January to 23°C in July, with August the wettest month at 183 mm.
warmest month
July
23°C
coolest month
January
-3°C
wettest month
August
183 mm
worst air month
August
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -3°C | 98 mm | 112 h | 6 |
| February | -1°C | 22 mm | 220 h | 11 |
| March | 2°C | 108 mm | 215 h | 8 |
| April | 7°C | 129 mm | 232 h | 8 |
| May | 16°C | 55 mm | 350 h | 7 |
| June | 20°C | 143 mm | 318 h | 9 |
| July | 23°C | 126 mm | 384 h | 11 |
| August | 20°C | 183 mm | 316 h | 12 |
| September | 18°C | 61 mm | 315 h | 7 |
| October | 11°C | 97 mm | 265 h | 4 |
| November | 5°C | 64 mm | 164 h | 4 |
| December | -2°C | 82 mm | 150 h | 4 |
About 3,041 hours of sun a year. Roughly 117 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.