Click on a day for an hourly weather forecast
The weather in Nelson in August is very cold with temperatures between 3°C and 12°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Nelson during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Nelson in August 2025.
If you’re planning to visit Nelson in the near future, we highly recommend that you review the 14 day weather forecast for Nelson before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 22° / 11° | 4 | 27 | 0 | 91 mm | Good | Nelson in January |
| February | 22° / 11° | 4 | 24 | 0 | 114 mm | Good | Nelson in February |
| March | 20° / 9° | 5 | 26 | 0 | 99 mm | Good | Nelson in March |
| April | 17° / 8° | 5 | 25 | 0 | 127 mm | Good | Nelson in April |
| May | 14° / 6° | 6 | 25 | 0 | 128 mm | Good | Nelson in May |
| June | 12° / 4° | 7 | 23 | 0 | 151 mm | Bad | Nelson in June |
| July | 11° / 3° | 6 | 25 | 0 | 154 mm | Ok | Nelson in July |
| August | 12° / 3° | 7 | 24 | 0 | 147 mm | Bad | Nelson in August |
| September | 14° / 4° | 7 | 23 | 0 | 142 mm | Ok | Nelson in September |
| October | 16° / 6° | 6 | 25 | 0 | 136 mm | Good | Nelson in October |
| November | 18° / 7° | 6 | 24 | 0 | 92 mm | Good | Nelson in November |
| December | 20° / 10° | 6 | 25 | 0 | 140 mm | Good | Nelson in December |