Bergen weather by month
Bergen runs from about -1°C in January to 15°C in May, with August the wettest month at 494 mm.
warmest month
May
15°C
coolest month
January
-1°C
wettest month
August
494 mm
worst air month
March
7 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -1°C | 240 mm | 63 h | 6 |
| February | 1°C | 323 mm | 77 h | 6 |
| March | 4°C | 184 mm | 159 h | 7 |
| April | 6°C | 145 mm | 242 h | 5 |
| May | 15°C | 69 mm | 355 h | 5 |
| June | 12°C | 203 mm | 306 h | 4 |
| July | 14°C | 174 mm | 285 h | 5 |
| August | 14°C | 494 mm | 171 h | 4 |
| September | 12°C | 180 mm | 219 h | 3 |
| October | 8°C | 332 mm | 102 h | 4 |
| November | 4°C | 211 mm | 65 h | 5 |
| December | 3°C | 401 mm | 29 h | 5 |
About 2,073 hours of sun a year. Roughly 260 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.