Amsterdam weather by month
Amsterdam runs from about 4°C in January to 19°C in August, with May the wettest month at 157 mm.
warmest month
August
19°C
coolest month
January
4°C
wettest month
May
157 mm
worst air month
March
16 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 4°C | 74 mm | 119 h | 14 |
| February | 8°C | 141 mm | 100 h | 11 |
| March | 8°C | 60 mm | 195 h | 16 |
| April | 10°C | 108 mm | 281 h | 10 |
| May | 15°C | 157 mm | 359 h | 9 |
| June | 15°C | 88 mm | 342 h | 8 |
| July | 17°C | 121 mm | 344 h | 8 |
| August | 19°C | 53 mm | 360 h | 9 |
| September | 16°C | 114 mm | 275 h | 9 |
| October | 12°C | 61 mm | 206 h | 8 |
| November | 7°C | 99 mm | 107 h | 10 |
| December | 7°C | 80 mm | 55 h | 11 |
About 2,743 hours of sun a year. Roughly 115 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 2026-05-22. Full method, licences and the list of sources we rejected are on the methodology page.