Click on a day for an hourly weather forecast
The weather in Santiago in August is very cold with temperatures between 2°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Santiago 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 Santiago in August 2025.
If you’re planning to visit Santiago in the near future, we highly recommend that you review the 14 day weather forecast for Santiago before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 25° / 12° | 0 | 31 | 0 | 7 mm | Perfect | Santiago in January |
| February | 26° / 12° | 1 | 27 | 0 | 4 mm | Perfect | Santiago in February |
| March | 25° / 11° | 0 | 31 | 0 | 2 mm | Perfect | Santiago in March |
| April | 23° / 8° | 1 | 30 | 0 | 5 mm | Perfect | Santiago in April |
| May | 19° / 6° | 2 | 29 | 0 | 48 mm | Good | Santiago in May |
| June | 15° / 2° | 4 | 25 | 1 | 116 mm | Good | Santiago in June |
| July | 14° / 1° | 2 | 27 | 1 | 59 mm | Good | Santiago in July |
| August | 16° / 2° | 3 | 28 | 0 | 69 mm | Good | Santiago in August |
| September | 17° / 3° | 2 | 28 | 0 | 30 mm | Good | Santiago in September |
| October | 20° / 5° | 2 | 29 | 0 | 19 mm | Good | Santiago in October |
| November | 23° / 8° | 1 | 29 | 0 | 7 mm | Perfect | Santiago in November |
| December | 25° / 11° | 1 | 30 | 0 | 4 mm | Perfect | Santiago in December |