Kingston weather by month
Kingston runs from about -3°C in January to 22°C in July, with August the wettest month at 134 mm.
warmest month
July
22°C
coolest month
January
-3°C
wettest month
August
134 mm
worst air month
February
9 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | -3°C | 104 mm | 123 h | 6 |
| February | -1°C | 47 mm | 212 h | 9 |
| March | 3°C | 71 mm | 238 h | 8 |
| April | 7°C | 117 mm | 227 h | 7 |
| May | 15°C | 93 mm | 345 h | 6 |
| June | 19°C | 125 mm | 313 h | 7 |
| July | 22°C | 124 mm | 379 h | 9 |
| August | 20°C | 134 mm | 314 h | 9 |
| September | 18°C | 54 mm | 306 h | 5 |
| October | 11°C | 50 mm | 249 h | 4 |
| November | 6°C | 59 mm | 178 h | 4 |
| December | -2°C | 85 mm | 126 h | 3 |
About 3,010 hours of sun a year. Roughly 106 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.