What is the weather like in Sao Paulo in September?

Expect temperatures between 15°C and 25°C with 20% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Sao Paulo in September?

Sao Paulo in September scores 68/100 based on 30 years of climate data. Recommended for planning your trip.

Who should visit Sao Paulo in September?

September in Sao Paulo is ideal for: Budget travelers, Outdoor enthusiasts, Cultural tourists, Honeymoon couples, Business travelers.

Sao Paulo Weather in September | 30-Year Forecast

Avg High

25°C

Hottest around day 10

Avg Low

15°C

Coolest around day 1

Rainy Days

6days

20% avg rain chance

Sunshine

8hrs/day

Autumn season

Essential Travel Info for Sao Paulo

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

BRL

R$ Brazilian real

Language

Portuguese

Driving

Right side

Safety

Moderate Safety

GPI: 2.465

Travel Intelligence

Exclusive flight analytics & health data for Sao Paulo

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Major Hub

100/ 100

Traffic Index

Extremely busy airport

Peak Daily Arrivals

slots per day

Peak

Jun

Low

Feb

Monthly Traffic Distribution

400

Jan

342

Feb

370

Mar

464

Apr

466

May

1604

Jun

1165

Jul

452

Aug

468

Sep

406

Oct

438

Nov

429

Dec

Traffic Level

Low Season

Key Connections

Porto Alegre Salgado Filho (POA)

Recife Guararapes - Gilberto Freyre (REC)

Curitiba Afonso Pena (CWB)

Belo Horizonte Tancredo Neves (CNF)

Salvador Deputado Luiz Eduardo Magalhães (SSA)

Health & Safety Advisory

CDC travel health recommendations

9 Recommendations

COVID-19

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

Chikungunya

There iselevated chikungunya riskin Brazil.Chikungunya vaccinationmay be considered for people traveling or moving to this location if they are planning to stay for an extended period of time (for example, 6 months or more).

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Brazil.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 Brazil. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Brazil.

Malaria

CDC recommends that travelers going to certain areas of Brazil take prescription medicine to prevent malaria. Depending on the medicine you take, you will need to start taking this medicine multiple days before your trip, as well as during and after your trip. Talk to your doctor about which malaria medication you should take.Transmission areasAll areas in the states of Acre, Amapá, Amazonas, Rondônia, and RoraimaPresent in the states of Maranhão, Mato Grosso, and Pará, but rare cases in their capital cities (São Luis [capital of Maranhão], Cuiabá [capital of Mato Grosso], Belém [capital of Pará])Rare cases and sporadic foci of transmission in rural and forested areas in the states of Espírito Santo, Goiás, Minas Gerais, Mato Grosso do Sul, Piauí, Rio de Janeiro, São Paolo, and TocantinsNo malaria transmission in the cities of Brasília (the capital), Rio de Janeiro, or São PaoloNo malaria transmission at Iguaçu FallsDrug resistanceChloroquineSpeciesP. vivax(90%)P. falciparum(10%)Recommended chemoprophylaxisAtovaquone-proguanil, doxycycline, mefloquine, tafenoquine2Areas with rare cases: No chemoprophylaxis recommended (insect bite precautions and mosquito avoidance only)4Updated April 23, 2025See footnotes

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.

+3 more

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Sao Paulo?

👍Recommended for planning your trip(68/100)

Short Answer

Hidden gem: Sao Paulo in September offers 25°C and 20% rain at just 29% of peak crowds. Excellent value without sacrificing weather quality.

Decision Factors

Vaccinations required

Yellow Fever

Off-peak season - fewer crowds

Only 29% of peak - better deals and quiet crowds

Ideal temperature range

25°C - perfect for sightseeing and outdoor activities

Health precautions needed

Be aware of: Leptospirosis, Melioidosis, Schistosomiasis

Plenty of sunshine

8.6h of sunshine daily

Exceptional dining scene

103 Michelin-listed restaurants

Good For

💰
Budget travelers
Off-peak pricing with acceptable weather conditions
🥾
Outdoor enthusiasts
Ideal hiking conditions: 25°C, 20% rain chance
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 96/100 with romantic weather conditions
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

👴
Elderly travelers
76% humidity creates difficult conditions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Sao Paulo in September averages 25°C with 20% precipitation probability."

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

Frequently Asked Questions: Sao Paulo in September

What are the temperatures in Sao Paulo in September?

Daytime highs average 25°C, nights drop to 15°C. Temperatures remain fairly consistent.

How many rainy days in Sao Paulo in September?

Expect around 6 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Sao Paulo in September?

Comfortable casual wear with a light jacket for evenings.

Is September peak season in Sao Paulo?

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

Sao Paulo Weather in September

Sao Paulo September Weather Calendar