| Average Temperature (deg C) | Average | Average Maximum (deg C) | Extreme Minimum (deg C) | Extreme Maximum (deg C) | Total Rainfall (mm) | Extreme | Auckland | |
| January | 19.3 | 14.5 | 24.2 | 8.3 | 27.0 | 102.2 | 64.9 | 234 |
| February | 19.2 | 14.3 | 24.2 | 5.6 | 26.9 | 19.5 | 4.0 | 212 |
| March | 17.8 | 13.0 | 22.6 | 5.7 | 25.9 | 61.0 | 17.7 | 192 |
| April | 17.1 | 13.0 | 21.1 | 8.3 | 23.9 | 215.4 | 52.5 | 159 |
| May | 13.2 | 9.3 | 17.1 | 1.1 | 20.4 | 231.8 | 30.5 | 142 |
| June | 8.9 | 4.2 | 13.7 | -0.9 | 17.2 | 108.5 | 19.7 | 165 |
| July | 9.7 | 5.0 | 14.4 | 0.3 | 17.4 | 52.9 | 17.8 | 159 |
| August | 10.5 | 6.2 | 14.9 | 0.1 | 18.1 | 117.8 | 42.2 | 145 |
| September | 13.1 | 8.5 | 17.7 | 3.3 | 20.9 | 57.5 | 36.3 | 181 |
| October | 13.6 | 9.5 | 17.6 | 2.8 | 20.9 | 148.7 | 38.8 | 159 |
| November | 15.7 | 11.6 | 19.9 | 5.6 | 22.9 | 86.7 | 15.5 | 201 |
| December | 15.4 | 10.8 | 20.0 | 4.6 | 23.4 | 78.0 | 14.1 | 232 |
| ANNUAL | 14.4 | 9.9 | 18.9 | -0.9 | 27.0 | 1280.0 | 64.9 | 2189 |
| Days >1mm rain | Days >10mm rain | Thunder days | Hail Days | Coldest day (deg C) | Warmest night (deg C) | |
| January | 6 | 3 | 0 | 0 | 21.2 | 19.9 |
| February | 9 | 0 | 0 | 0 | 21.3 | 20.5 |
| March | 12 | 2 | 0 | 0 | 17.8 | 19.0 |
| April | 17 | 6 | 4 | 0 | 16.1 | 17.6 |
| May | 19 | 10 | 4 | 2 | 13.3 | 16.5 |
| June | 13 | 4 | 2 | 0 | 9.2 | 12.5 |
| July | 12 | 2 | 0 | 0 | 11.0 | 11.7 |
| August | 16 | 2 | 1 | 1 | 12.2 | 12.5 |
| September | 6 | 2 | 0 | 0 | 13.9 | 14.2 |
| October | 15 | 5 | 3 | 1 | 14.3 | 14.0 |
| November | 13 | 4 | 0 | 0 | 15.0 | 16.9 |
| December | 13 | 3 | 2 | 1 | 16.8 | 16.1 |
| ANNUAL | 151 | 43 | 16 | 5 | 9.2 | 20.5 |