Newcastle weather by month
Newcastle runs from about 13°C in June to 24°C in January, with June the wettest month at 181 mm.
warmest month
January
24°C
coolest month
June
13°C
wettest month
June
181 mm
worst air month
June
11 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 24°C | 48 mm | 331 h | 9 |
| February | 24°C | 97 mm | 260 h | 10 |
| March | 22°C | 40 mm | 310 h | 8 |
| April | 19°C | 168 mm | 272 h | 10 |
| May | 16°C | 156 mm | 237 h | 8 |
| June | 13°C | 181 mm | 236 h | 11 |
| July | 13°C | 47 mm | 263 h | 7 |
| August | 16°C | 62 mm | 256 h | 8 |
| September | 17°C | 57 mm | 299 h | 8 |
| October | 18°C | 80 mm | 317 h | 8 |
| November | 22°C | 115 mm | 293 h | 8 |
| December | 23°C | 48 mm | 368 h | 10 |
About 3,442 hours of sun a year. Roughly 112 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.