Climate averages 1991–2020
New Plymouth weather
in August.
A cool, wet month: the 11th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a cool month in New Plymouth: daytime highs average 12.4°C and nights cool to about 7.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 177 mm of rain on roughly 16 days, which makes August a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 36 min on an average August day.
The nearest other city in this atlas is Hamilton, New Zealand (177 km away). In August its highs average 13.5°C, 1.1°C warmer than New Plymouth, with 122 mm of rain.
Among the 11 cities listed in New Zealand, New Plymouth ranks 6th of 11 for the warmest August highs and 11th of 11 for the driest August (rainfall, lowest first). The mean August high of those 11 cities is 12.4°C; New Plymouth is level with that mean.
From August to September, average highs rise by 1.1°C to 13.4°C, and monthly rainfall falls from 177 mm to 173 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
New Plymouth climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 20.0°C14.2°C | 14.2°C | 106 | 10.3 | 14.615 h |
| February | 20.7°C14.9°C | 14.9°C | 104 | 9.0 | 13.614 h |
| March | 19.2°C13.6°C | 13.6°C | 109 | 10.5 | 12.412 h |
| April | 16.9°C11.7°C | 11.7°C | 154 | 12.6 | 11.111 h |
| May | 14.7°C10.2°C | 10.2°C | 183 | 14.1 | 10.010 h |
| June | 12.7°C8.3°C | 8.3°C | 185 | 14.7 | 9.59 h |
| July | 11.9°C7.2°C | 7.2°C | 189 | 16.2 | 9.710 h |
| August, selected | 12.4°C7.3°C | 7.3°C | 177 | 16.0 | 10.611 h |
| September | 13.4°C8.3°C | 8.3°C | 173 | 15.6 | 11.812 h |
| October | 14.7°C9.5°C | 9.5°C | 171 | 14.9 | 13.113 h |
| November | 16.3°C10.7°C | 10.7°C | 134 | 12.4 | 14.214 h |
| December | 18.4°C12.9°C | 12.9°C | 160 | 13.4 | 14.815 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Hamilton, New Zealand in AugustNew Zealand · 177 kmHigh 13.5°C · Low 5.7°C · 122 mm rain
- Palmerston North in AugustNew Zealand · 194 kmHigh 12.1°C · Low 5.2°C · 89 mm rain
- Tauranga in AugustNew Zealand · 238 kmHigh 13.4°C · Low 7.7°C · 117 mm rain
- Manukau City in AugustNew Zealand · 241 kmHigh 13.8°C · Low 8.5°C · 97 mm rain
- Hastings, New Zealand in AugustNew Zealand · 246 kmHigh 13.0°C · Low 5.5°C · 65 mm rain
- Lower Hutt in AugustNew Zealand · 249 kmHigh 11.8°C · Low 7.7°C · 80 mm rain
- Auckland in AugustNew Zealand · 254 kmHigh 13.8°C · Low 9.1°C · 104 mm rain
- Wellington in AugustNew Zealand · 254 kmHigh 11.3°C · Low 8.6°C · 82 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for New Plymouth) is explained once on the New Plymouth year overview and on the Sources, method and limits page.