What is the weather like in Santiago in September?

Expect temperatures between 7°C and 18°C with 13% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Santiago in September?

Santiago in September scores 66/100 based on 30 years of climate data. Very good conditions overall.

Who should visit Santiago in September?

September in Santiago is ideal for: Families with children, Elderly travelers, Outdoor enthusiasts, Cultural tourists, Honeymoon couples.

Santiago Weather in September | 30-Year Forecast

Avg High

18°C

Hottest around day 29

Avg Low

7°C

Coolest around day 12

Rainy Days

0days

13% avg rain chance

Sunshine

8hrs/day

Autumn season

Essential Travel Info for Santiago

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

CLP

$ Chilean peso

Language

Spanish

Driving

Right side

Connect

If you wish to mail a letter or postcard...

Safety

High Safety

GPI: 1.84

Travel Intelligence

Exclusive flight analytics & health data for Santiago

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate

54/ 100

Traffic Index

Balanced traffic

Peak Daily Arrivals

slots per day

Peak

Jan

Low

Sep

Monthly Traffic Distribution

241

Jan

231

Feb

214

Mar

222

Apr

239

May

176

Jun

220

Jul

175

Aug

Sep

201

Oct

154

Nov

222

Dec

Traffic Level

Low Season

Key Connections

Calama El Loa (CJC)

Antofagasta Cerro Moreno (ANF)

Port Montt El Tepual (PMC)

Lima Jorge Chávez (LIM)

Concepción Carriel Sur (CCP)

Health & Safety Advisory

CDC travel health recommendations

7 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Chile.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Chile. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Chile.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Chile.Rabies is present in bats.If rabies exposures occur while in Chile, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Typhoid

Recommended for most travelers, especially those staying with friends or relatives or visiting smaller cities or rural areas.

+1 more

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Santiago?

👍Very good conditions overall(66/100)

Short Answer

Santiago shines in September with 18°C pleasant temperatures and minimal 13% rain chance. Expect 9.3 hours of sunshine daily - pack light layers for evenings.

Decision Factors

Vaccinations required

Yellow Fever

Seismically active region

48 earthquakes recorded in this month (30-year data)

Excellent dry conditions

Only 13% rain probability - ideal for outdoor activities

Health precautions needed

Be aware of: Leptospirosis, Chagas disease (American Trypanosomiasis), Hantavirus

Plenty of sunshine

9.3h of sunshine daily

Shoulder season - balanced conditions

36% of peak - good value with moderate crowds

Good For

👨‍👩‍👧‍👦
Families with children
Comfortable 18.2°C temperatures and low 13% rain risk
👴
Elderly travelers
Comfortable 18.2°C temperature range with manageable humidity
🥾
Outdoor enthusiasts
Ideal hiking conditions: 18.2°C, 13% rain chance
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 96/100 with romantic weather conditions

Who Should Avoid

Suitable for most traveler types

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Santiago in September averages 18°C with 13% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Santiago in September

What are the temperatures in Santiago in September?

Daytime highs average 18°C, nights drop to 7°C. Temperatures remain fairly consistent.

How many rainy days in Santiago in September?

Expect around 0 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Santiago in September?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is September peak season in Santiago?

This is typically peak season with higher prices. Book 2-3 months ahead.

Santiago Weather in September

Santiago September Weather Calendar