Nelson weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Poor
Best time to visit: January – February
What is the weather like in Nelson in August?
In August, Nelson is cool: daytime highs average 12 °C, and nights cool down to about 5 °C. The sea averages 11.9 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 117 mm in total. All in all, August is not an ideal month for a holiday in Nelson.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 17 | 17 | 18 |
| Day | 11° | 12° | 14° |
| Night | 5° | 5° | 7° |
| Sea | 12° | 12° | 13° |
| Sun | 4 h | 5 h | 6 h |
| Rain days | 10 | 11 | 12 |
More details for August
- Daylight
- 10 h 26 min07:19 – 17:45
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+12Pacific/Auckland
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %37 %
- Few rainy daysweight 20 %47 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- A jumper for the evenings
- Rain jacket or umbrella
Nelson in August: quick answers
Is Nelson hot in August?
No. In August, Nelson is cool: daytime highs average 12 °C and nights drop to about 5 °C.
Can you swim in Nelson in August?
Only if you don't mind cold water: in August the sea averages just 11.9 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Nelson in August?
Rain is frequent, with about 11 rainy days and 117 mm in total.
Nelson month by month
The whole year in NelsonAll destinations: New ZealandWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences