Weather in Santiago in August 2025
Average weather
Average temperature in Santiago in August
The expected average maximum temperature in August is +19°C with a maximum of +27°C and a minimum of +1°C.
The average maximum temperature goes down 4% by the end of the month, compared with the beginning of the month, from +23°C to +22°C.
Is Santiago warm or cold in August?
Santiago is typically mild in August.
Maximum temperatures go up compared to the previous month from +15°C to +17°C. The minimum temperature also goes up from +5°C to +6°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
August is one of the coolest months in Santiago, here is the comparison with other months:
Climate in Santiago in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +15°C | +17°C | +19°C | ||||
| Min. temperature | ||||||
| -5°C | -4°C | -2°C | ||||
| Max. temperature | ||||||
| +28°C | +31°C | +32°C | ||||
| Rainfall | ||||||
| 89 mm | 77 mm | 55 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 76% | 75% | 70% | ||||
| Air pressure | ||||||
| 1017 HPa | 1017 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 9 | 10 | 10 | ||||
| Cloudy days | ||||||
| 12 | 11 | 8 | ||||
| Rainy days | ||||||
| 9 | 10 | 12 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as ok as in July. It’s getting warmer as August arrives. The average maximum temperature goes up from +15°C to +17°C during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 89 mm to 77 mm. It feels drier, as humidity decreases from 76% to 75%. The average wind speed doesn’t change much during August, staying around 1 m/s. The good news is there are likely to be more sunny days in August, from 9 to 10.
But maybe it is worth considering traveling in September as the weather gets better.
Wind
The average wind speed is 2 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Santiago is gradually increasing during August, going from 1 m/s to 2 m/s over the course of the month.
Rain
How was the weather last August in Santiago?
Climate Change over Years
The climate in Santiago in August has not changed much over the last 43 years.
The average temperature was the lowest in 2007 (+21°C) and the highest in 2020 (+24°C). The driest year was 1998 with only 165 mm of rainfall, and the wettest year was 1997 with 1031 mm.
FAQ
Is August a good time to visit Santiago?
Can you sunbathe in Santiago in August?
Is Santiago rainy in August?
Is it sunny in Santiago in August?
Other cities in Chile
Monthly weather in Santiago
Source of the data
For this page, we’ve looked at the typical weather in Santiago, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.