Lunenburg weather by month
Lunenburg runs from about -2°C in February to 21°C in July, with March the wettest month at 234 mm.
warmest month
July
21°C
coolest month
February
-2°C
wettest month
March
234 mm
worst air month
August
9 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -2°C | 146 mm | 152 h | 3 |
| February | -2°C | 126 mm | 161 h | 3 |
| March | 3°C | 234 mm | 154 h | 6 |
| April | 5°C | 91 mm | 266 h | 5 |
| May | 11°C | 36 mm | 257 h | 5 |
| June | 17°C | 88 mm | 292 h | 6 |
| July | 21°C | 59 mm | 280 h | 8 |
| August | 20°C | 76 mm | 291 h | 9 |
| September | 17°C | 106 mm | 267 h | 5 |
| October | 11°C | 29 mm | 242 h | 4 |
| November | 7°C | 104 mm | 115 h | 3 |
| December | 0°C | 125 mm | 142 h | 3 |
About 2,619 hours of sun a year. Roughly 124 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.