The month in detail
What to expect in September
Spring marks the start of the good season in Santiago. Temperatures rise (66°F) and tourists have not yet arrived en masse. Rain is virtually absent (9% of days) — ideal for planning without a backup. A good balance between weather and crowds, even if January (9.8/10) remains theoretically better.
September ranks 8 out of 12 months in Santiago. Compared to August: +5°F daytime, +0.9h of sun per day.
This month's conditions
What it's like in September
UV index
6 · high
sunscreen and hat advised
Feels like
dry air
7°
Daylight
11.8h of daylight
Air quality
poor
AQI 65
Compare
Is September the right month?
The best month in Santiago is January (9.8/10), 2.1 pts higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Santiago
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Santiago
GetYourGuide selection · free cancellation
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 · 17%
🏖️ Beach trip
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Santiago ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
ChileTemperate oceanic climate with a 9.8 → 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 0.0% 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 9.6/10.
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 9.5/10 on average — Acceptable conditions for cultural visits.. The best month overall remains January with a score of 9.6/10.
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 September?
The average UV index reaches 6 in September in Santiago (high), with about 11.8h of daylight. Sunscreen and hat advised.