Santiago Weather in August 2026: what to expect (7.3/10)

The month in detail

What to expect in August

In August, Santiago sees 16.0°F during the day with 5.5h of sunshine per day. Rain risk remains low (19.0% of days), leaving good room for outdoor activities. Not the best window, but acceptable if dates are constrained. January (9.7/10) is significantly better if possible.

August ranks 10 out of 12 months in Santiago. Compared to July: +2°F daytime, +0.8h of sun per day.

This month's conditions

What it's like in August

UV index

4 · moderate

protect during midday hours

Feels like

dry air

5°

Daylight

10.8h of daylight

Air quality

poor

AQI 68

Compare

Is August the right month?

The best month in Santiago is January (9.7/10), 2.4 pts higher than August.

See January →See all 12 months →

Context

Our verdict

Santiago is dominated by the Andes: atmospheric pollution in winter (the thermal inversion blocks the smog in the basin), dry Mediterranean summer. December is my favorite month (9.8/10): 57-84°F, 3% rain, 14h days.

Read Gilles' full review →

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

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Stay

Hotels & rentals · Santiago

Expedia →

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Activities

Tours, tickets, experiences

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Flights

Multi-airline comparator

Kiwi →

🎟️ Activities & tours · Santiago

GetYourGuide selection · free cancellation

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Affiliate link · GetYourGuide

Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach trip.

Country · Chile

🗣️LanguageSpanish

💶CurrencyChilean Peso ($)

🚗DrivingRight-hand

🛡️Safety ⓘVery safe · 1/5

💰Cost of living ⓘCheap · 2/5

🌡️ Climate

🌍Climate typeTemperate oceanic

📈Climate trend ⓘStable

🔥Hottest monthJanuary · 86°F

❄️Coolest monthJune · 59°F

🌧️Rainiest month ⓘJune · 21%

🏖️ Beach trip

📅Peak seasonJuin → Sept

🏖️Swell (Sept–Mar) ⓘModérée

Explore

Other destinations in August

If August doesn't convince you for this destination, compare with others.

Similar climate

Cape TownSouth Africa

Nearby

Valle NevadoChile37 km

PortilloChile84 km

ChileChile175 km

MendozaArgentina182 km

Other top picks

LimaPeru7.4

OaxacaMexico7.4

GuanajuatoMexico7.7

San Miguel de AllendeMexico7.7

CadizSpain6.6

← July September →

🗺️ See all 754 destinations on the map

Location

Where is Santiago ?

Global position + regional geographic context.

🌍 World

🔍 Geographic context

Chile

Temperate oceanic climate with a 9.7 → 4.4 gap between best and worst month. 10 years of ERA5 data to choose by project.

33.45°S · 70.67°W

Questions

Frequently asked questions

What is the best time to visit Santiago?

January is the best month with 86°F highs, 61°F lows, 11.8h of sunshine and 2.0% rainy days. The months of January & December offer comparable conditions.

How many hours of sunshine does Santiago get in January?

Santiago averages 11.8 sunshine hours per day in January. It is the sunniest month with a climate score of 9.5/10.

What is the rainiest month in Santiago?

June is the most unfavourable month with June has the lowest climate score of the year and the lowest climate score of the year.

What are the temperatures at night in Santiago in January?

In January, overnight lows reach 61°F, while afternoon highs average 86°F.

Is Santiago good in winter?

In winter (December-February), Santiago scores 9.4/10 on average — Acceptable conditions for cultural visits.. The best month overall remains January with a score of 9.5/10.

When should you avoid Santiago?

June is the most difficult month to visit Santiago, with June has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.

Do you need sun protection in Santiago in August?

The average UV index reaches 4 in August in Santiago (moderate), with about 10.8h of daylight. Protect during midday hours.