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Santiago in August: Weather, Average temperature and Climate

Take a look at past year’s weather for Santiago in August and see if it is worth visiting.
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August

Weather in Santiago in August 2025

OK Weather
Mild
☁️
Cloudy
Santiago in August usually sees fair weather conditions, with an average daily high temperature of +63°F and roughly 10 sunny days. However, you should prepare for about 10 rainy days with an average precipitation of 77 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+63°F
Avg. max. temperature
+25°F
Min.
+88°F
Max.
77 mm
Total precipitation
75%
Avg. humidity
1 m/s
Avg. wind
10 ☀️
Sunny Days
11 ⛅️
Cloudy
10 🌦
Rainy
Our opinion: Santiago has OK weather in August.

Average temperature in Santiago in August

Here are the expected maximum, average and minimum temperatures in Santiago for August based on the historical data.
Last Year
Historical Data

The temperature in August is +66°F on average, with a range between a maximum of +81°F during the day and a minimum of +34°F at night.

The average maximum temperature goes down 4% by the end of the month, compared with the beginning of the month, from +73°F to +72°F.

Is Santiago warm or cold in August?

Santiago is typically mild in August.

Maximum temperatures go up compared to the previous month from +59°F to +63°F. The minimum temperature also goes up from +41°F to +43°F.

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

Santiago weather looks like this, on average, in August and the surrounding months.
JulyAugustSeptember
Avg. temperature
+59°F+63°F+66°F
Min. temperature
+23°F+25°F+28°F
Max. temperature
+82°F+88°F+90°F
Rainfall
89 mm77 mm55 mm
Wind
1 m/s1 m/s1 m/s
Humidity
76%75%70%
Air pressure
1017 HPa1017 HPa1017 HPa
Sunny days
91010
Cloudy days
12118
Rainy days
91012
Snowy days
000

August weather is still as ok as in July. It’s getting warmer as August arrives. The average maximum temperature goes up from +59°F to +63°F 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

Wind speed in Santiago in August based on historical data.
Last Year
Historical Data

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

Amount of rainfall in mm during August in Santiago based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in August stands at 32%, leading to total precipitation of around 145 mm. The maximum amount of rainfall per day is around 45 mm, which is moderate rain. August is a pretty wet month with over 10 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
August is one of the rainiest months in Santiago, here is a comparison with other months, total mm:
Santiago wettest month is June, where a typical day has a 27% chance of precipitation and 92 mm of rainfall per day. January, on the other hand, is the driest month with a mere 13% chance of precipitation and 4 mm of rainfall per day.

How was the weather last August in Santiago?

This is the weather in Santiago in August 2023:
1 August
☀️
+74°F
2 August
☀️
+78°F
3 August
☀️
+75°F
4 August
☀️
+81°F
5 August
☀️
+68°F
6 August
🌧️
+65°F
7 August
☁️
+64°F
8 August
☁️
+73°F
9 August
☁️
+64°F
10 August
🌧️
+62°F
11 August
☁️
+67°F
12 August
☀️
+72°F
13 August
☀️
+80°F
14 August
☀️
+77°F
15 August
☁️
+68°F
16 August
☁️
+62°F
17 August
🌧️
+60°F
18 August
☁️
+61°F
19 August
🌫️
+60°F
20 August
☁️
+62°F
21 August
☁️
+64°F
22 August
🌧️
+61°F
23 August
🌧️
+52°F
24 August
☁️
+59°F
25 August
☀️
+64°F
26 August
☀️
+65°F
27 August
☀️
+71°F
28 August
☁️
+65°F
29 August
☀️
+71°F
30 August
☀️
+66°F
31 August
☀️
+72°F
In August 2023 Santiago had 14 sunny days, 11 cloudy days, and 5 rainy days. The average maximum temperature was +66°F, with an absolute maximum of +81°F and a minimum of +52°F. The average humidity was 73%, with a maximum of 100% and a minimum of 23%. The average wind speed was 2 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in August?

Climate Change Over the Years

This is how Santiago climate has changed over the last 43 years.

The climate in Santiago in August has not changed that much over the last 43 years.

The average temperature was the lowest in 2007 (+70°F) and the highest in 2020 (+75°F). The driest year was 1998 with only 165 mm of rainfall, and the wettest year was 1997 with 1031 mm.

FAQ

Frequently asked questions about the weather in Santiago in August:

Is August a good time to visit Santiago?

It’s always a good time to visit Santiago, but the weather is changeable in August, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Santiago in August?

August has mild temperatures in Santiago. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Santiago rainy in August?

Santiago is often rainy in August. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Santiago in August?

The amount of sunny days in Santiago during August varies; prepare for a mix of clouds and sun.

Other cities in Chile

Check out the weather for 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.