What is the weather like in Manaus in September?

Expect temperatures between 25°C and 32°C with 34% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Manaus in September?

Manaus in September scores 57/100 based on 30 years of climate data. Decent conditions for most activities.

Who should visit Manaus in September?

September in Manaus is ideal for: Business travelers.

Manaus Weather in September | 30-Year Forecast

Avg High

32°C

Hottest around day 22

Avg Low

25°C

Coolest around day 5

Rainy Days

28days

34% avg rain chance

Sunshine

8hrs/day

Autumn season

Manaus September Weather Calendar

Click any day to see detailed weather information

Day 1

Cloudy

32°C30%

Day 2

Cloudy

32°C28%

Day 3

Cloudy

32°C29%

Day 4

Cloudy

32°C30%

Day 5

Cloudy

32°C35%

Day 6

Cloudy

32°C38%

Day 7

Cloudy

32°C36%

Day 8

Cloudy

32°C35%

Day 9

Cloudy

32°C36%

Day 10

Cloudy

32°C35%

Day 11

Cloudy

32°C36%

Day 12

Cloudy

32°C38%

Day 13

Cloudy

32°C34%

Day 14

Cloudy

32°C33%

Day 15

Cloudy

32°C38%

Day 16

Cloudy

32°C32%

Day 17

Cloudy

32°C30%

Day 18

Cloudy

32°C32%

Day 19

Cloudy

32°C32%

Day 20

Cloudy

32°C23%

Day 21

Cloudy

32°C24%

Day 22

Cloudy

32°C26%

Day 23

Cloudy

32°C31%

Day 24

Cloudy

32°C34%

Day 25

Cloudy

32°C40%

Day 26

Rainy

32°C45%

Day 27

Rainy

32°C46%

Day 28

Rainy

32°C46%

Day 29

Rainy

32°C42%

Day 30

Cloudy

32°C40%

Essential Travel Info for Manaus

🗓️ 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 Manaus

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Remote

17/ 100

Traffic Index

Off the beaten path

Peak Daily Arrivals

slots per day

Peak

May

Low

Jul

Monthly Traffic Distribution

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Traffic Level

Low Season

Key Connections

São Paulo Guarulhos - Governador André Franco Montoro (GRU)

Brasília Presidente Juscelino Kubistschek (BSB)

Belém Júlio Cezar Ribeiro (BEL)

Campinas Viracopos (VCP)

Fortaleza Pinto Martins (FOR)

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 Manaus?

👌Decent conditions for most activities(57/100)

Short Answer

Expect challenging weather in Manaus during September - 32°C combined with 78% humidity creates a heat index of 43°C. Air conditioning and strategic planning are essential.

Decision Factors

Oppressive heat and humidity

31.9°C with 78% humidity - challenging conditions

Vaccinations required

Yellow Fever

Feels significantly hotter than 31.9°C

Heat index: 43°C due to 78% humidity

Health precautions needed

Be aware of: Leptospirosis, Melioidosis, Schistosomiasis

Plenty of sunshine

10.6h of sunshine daily

Shoulder season - balanced conditions

76% of peak - good value with moderate crowds

Good For

💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

👨‍👩‍👧‍👦
Families with children
43°C heat index dangerous for children
👴
Elderly travelers
Heat index of 43°C poses health risks
🥾
Outdoor enthusiasts
Extreme conditions limit outdoor activity options
🌡️
Heat-sensitive visitors
43°C feels-like temperature creates discomfort

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Manaus in September averages 32°C with 34% precipitation probability."

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

Frequently Asked Questions: Manaus in September

What are the temperatures in Manaus in September?

Daytime highs average 32°C, nights drop to 25°C. Temperatures remain fairly consistent.

How many rainy days in Manaus in September?

Expect around 28 days with measurable rainfall. An umbrella is advisable.

What to wear in Manaus in September?

Light, breathable fabrics. Don't forget sunglasses and a hat.

Is September peak season in Manaus?

This is shoulder season—moderate prices and manageable crowds.

Manaus Weather in September

Manaus September Weather Calendar

Essential Travel Info for Manaus

Travel Intelligence

Smart Flight Estimator

Flight Connectivity Analysis

Monthly Traffic Distribution

Key Connections

Health & Safety Advisory

COVID-19

Chikungunya

Hepatitis A

Hepatitis B

Malaria

Measles

Decision Factors

Good For

Who Should Avoid

Related Guides

Frequently Asked Questions: Manaus in September

What are the temperatures in Manaus in September?

How many rainy days in Manaus in September?

What to wear in Manaus in September?

Is September peak season in Manaus?