Average annual temperature is 14.8 °C
Absolute maximum temperature: 26.3 °C
Absolute minimum temperature: 1.5 °C
Number of sunny days: 72 days
Number of rainy days: 293 days
Look at detailed online map of Mercer
* Weather data for Mercer New Zealand is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 25.7 | 26.3 | 23.5 | 22.9 | 22.0 | 17.7 | 16.1 | 15.4 | 21.8 | 21.9 | 23.2 | 25.9 |
| Average daytime temperature (°C) | 22.4 | 22.6 | 21.1 | 20.1 | 17.8 | 15.1 | 14.2 | 13.6 | 16.6 | 17.8 | 19.5 | 22.5 |
| Average temperature (°C) | 19.2 | 18.7 | 16.7 | 16.5 | 14.4 | 11.2 | 11.1 | 9.4 | 13.0 | 14.1 | 15.2 | 18.5 |
| Average night temperature (°C) | 16.5 | 15.7 | 13.0 | 13.8 | 12.2 | 8.3 | 8.7 | 5.9 | 10.2 | 11.1 | 11.7 | 15.4 |
| Absolute minimum temperature (°C) | 13.6 | 12.5 | 6.0 | 6.2 | 4.7 | 2.0 | 3.5 | 1.5 | 5.1 | 5.4 | 7.8 | 9.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.4 | 13.5 | 12.3 | 11.1 | 10.1 | 9.6 | 9.9 | 10.7 | 11.9 | 13.1 | 14.1 | 14.7 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 7.5 | 9.4 | 9.6 | 7.3 | 6.0 | 7.0 | 7.4 | 7.8 | 8.7 | 9.0 | 10.4 | 9.7 |
| Precipitation (mm) | 388 | 226 | 80 | 102 | 195 | 101 | 86 | 55 | 152 | 90 | 128 | 132 |
| Sunny days | 3 | 1 | 9 | 8 | 4 | 9 | 5 | 8 | 7 | 3 | 7 | 8 |
| Rainy days | 28 | 27 | 22 | 22 | 27 | 21 | 26 | 23 | 23 | 28 | 23 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Mercer during the most sunny months:
The largest precipitation sum in Mercer is at