Auckland weather by month
Auckland runs from about 11°C in July to 21°C in January, with July the wettest month at 138 mm.
warmest month
January
21°C
coolest month
July
11°C
wettest month
July
138 mm
worst air month
November
7 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 21°C | 88 mm | 364 h | 6 |
| February | 20°C | 61 mm | 325 h | 6 |
| March | 17°C | 75 mm | 306 h | 6 |
| April | 17°C | 89 mm | 278 h | 5 |
| May | 13°C | 64 mm | 271 h | 5 |
| June | 13°C | 89 mm | 214 h | 6 |
| July | 11°C | 138 mm | 212 h | 5 |
| August | 12°C | 82 mm | 249 h | 4 |
| September | 13°C | 69 mm | 288 h | 6 |
| October | 15°C | 112 mm | 340 h | 6 |
| November | 17°C | 90 mm | 315 h | 7 |
| December | 19°C | 94 mm | 373 h | 6 |
About 3,535 hours of sun a year. Roughly 105 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.