Climate averages 1991–2020
Wellington weather
in August.
A cool, moderately 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 Wellington: daytime highs average 11.3°C and nights cool to about 8.6°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 82 mm of rain on roughly 13 days, which makes August a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 29 min on an average August day.
The nearest other city in this atlas is Lower Hutt (14 km away). In August its highs average 11.8°C, about as warm as Wellington, with 80 mm of rain.
Among the 11 cities listed in New Zealand, Wellington ranks 9th of 11 for the warmest August highs and 5th of 11 for the driest August (rainfall, lowest first). The mean August high of those 11 cities is 12.4°C; Wellington is 1.0°C cooler than that mean.
From August to September, average highs rise by 0.9°C to 12.3°C, and monthly rainfall falls from 82 mm to 74 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
Wellington climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.8°C14.6°C | 14.6°C | 55 | 7.6 | 14.815 h |
| February | 18.3°C15.0°C | 15.0°C | 56 | 6.1 | 13.714 h |
| March | 17.2°C14.0°C | 14.0°C | 59 | 7.6 | 12.412 h |
| April | 15.4°C12.4°C | 12.4°C | 73 | 9.1 | 11.011 h |
| May | 13.8°C11.1°C | 11.1°C | 76 | 10.3 | 9.910 h |
| June | 12.0°C9.4°C | 9.4°C | 95 | 12.1 | 9.29 h |
| July | 11.2°C8.6°C | 8.6°C | 87 | 12.2 | 9.510 h |
| August, selected | 11.3°C8.6°C | 8.6°C | 82 | 12.7 | 10.510 h |
| September | 12.3°C9.4°C | 9.4°C | 74 | 10.7 | 11.812 h |
| October | 13.5°C10.4°C | 10.4°C | 83 | 11.4 | 13.213 h |
| November | 14.7°C11.5°C | 11.5°C | 69 | 9.1 | 14.414 h |
| December | 16.5°C13.4°C | 13.4°C | 65 | 9.7 | 15.115 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
- Lower Hutt in AugustNew Zealand · 14 kmHigh 11.8°C · Low 7.7°C · 80 mm rain
- Palmerston North in AugustNew Zealand · 125 kmHigh 12.1°C · Low 5.2°C · 89 mm rain
- Hastings, New Zealand in AugustNew Zealand · 254 kmHigh 13.0°C · Low 5.5°C · 65 mm rain
- New Plymouth in AugustNew Zealand · 254 kmHigh 12.4°C · Low 7.3°C · 177 mm rain
- Christchurch in AugustNew Zealand · 305 kmHigh 11.2°C · Low 3.1°C · 48 mm rain
- Hamilton, New Zealand in AugustNew Zealand · 392 kmHigh 13.5°C · Low 5.7°C · 122 mm rain
- Tauranga in AugustNew Zealand · 418 kmHigh 13.4°C · Low 7.7°C · 117 mm rain
- Manukau City in AugustNew Zealand · 478 kmHigh 13.8°C · Low 8.5°C · 97 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 Wellington) is explained once on the Wellington year overview and on the Sources, method and limits page.