Weather in Brazil in September

Planning a trip to Brazil in September? In this guide, you will find all the information you need about the weather in Brazil in September. Find out about expected temperatures, rainfall, and humidity so you can prepare for your trip. We will help you navigate the early spring climate in Brazil and ensure a well-prepared and unforgettable experience.

Brazil in September at a glance

September in Brazil signals the start of spring, bringing milder temperatures, blooming landscapes, and fewer crowds. Here's what to expect:

• Warm, pleasant days with temperatures ranging from 65°F to 85°F (18°C to 29°C). Occasional rain showers may occur as the dry season ends.
• With fewer tourists, September offers more affordable prices and less crowded attractions, particularly in major cities and coastal areas.
• Ideal for outdoor adventures and sightseeing with comfortable weather, but not the best if you're after summer heat and beach vibes.

Is September a good time to visit Brazil? 

September in Brazil is a peculiar combination of advantages and challenges. The weather during this month marks the transition from the remnants of winter to the emergence of spring, providing pleasant temperatures ideal for exploring Brazil's dynamic landscapes and lively urban centers.

Benefits of visiting Brazil in September

Visiting Brazil in September has several advantages. As spring arrives, the country experiences milder temperatures, ideal for outdoor adventures and sightseeing. There are still few tourists this month compared to the peak season, creating a quieter and more secluded environment for exploring Brazil's iconic sights and hidden gems. 

September is also a great time for wildlife enthusiasts, as many species become more active and visible in the milder climate. The unique combination of the pleasant weather in Brazil in September, fewer tourists, and natural beauty makes this month the perfect time to explore Brazil.

Downsides of visiting Brazil in September

Despite its many advantages, visiting Brazil in September also comes with its own challenges. The transition from winter to spring can bring unpredictable weather, occasional rain, and fluctuating temperatures. This will require that you adapt plans and clothing. 

Although overall tourist numbers are down, popular destinations may see a slight uptick as people are attracted to the pleasant early spring climate. Finally, during this quiet tourist period, some attractions and accommodation facilities may close for maintenance or repairs, which may affect travel itineraries.

Haven't picked the right time for your Brazil trip yet? Explore our detailed guide to the best time to visit Brazil and gain the insights that will help you decide.

Average daily temperatures in September

September in Brazil sees a change in weather from the cooler winter months to the warmer spring season. For those planning a trip at this time, it is important to be aware of regional climatic differences, as understanding the variety of weather in Brazil in September is key to a well-prepared trip.

Temperatures and humidity in North, Central, and Southern Brazil

In the northern regions, including the Amazon rainforest, the climate remains warm and humid. Daytime temperatures in these areas often fluctuate between 79°F and 91°F (26°C and 33°C). The high humidity, especially in the dense rainforests, can make the air seem even warmer.

Moving into central Brazil, areas such as Brasilia welcome the spring season with milder temperatures. Here, average temperatures range from 68°F to 86°F (20°C to 30°C). The moderate humidity in these regions provides comfortable conditions ideal for exploring the city as well as for outdoor excursions.

The southern part of Brazil shows a noticeable warming trend with the onset of September. Temperatures in these southern areas typically range from 59°F to 77°F (15°C to 25°C). In this part of Brazil, humidity levels are lower than in the tropical north, marking a pleasant transition to spring weather.

Temperatures around Rio de Janeiro

In Rio, September brings pleasant weather with temperatures usually between 68°F to 82°F (20°C to 28°C). Humidity is moderate, making it ideal for beach activities and city exploration.

When planning a trip to Rio de Janeiro, check out our list of Rio's essential sights and experiences to help you get the most out of this vibrant city.

Temperatures around São Paulo

The weather in São Paulo is similar to Rio, with temperatures ranging from 63°F to 81°F (17°C to 27°C). The climate is generally pleasant, with humidity lower than in coastal areas.

If São Paulo is on your Brazil itinerary, explore our guide to the best places to stay in São Paulo and find accommodation options that work for you.

Temperatures in the Amazon Rainforest

The Amazon maintains a warm and humid tropical climate. Daytime temperatures stay between 79°F and 91°F (26°C and 33°C), and high humidity intensifies the heat.

Temperatures at Iguaçu Falls

Expect spring-like conditions at Iguaçu Falls, with temperatures between 59°F and 77°F (15°C and 25°C). The weather is usually mild, enhancing the experience of visiting the falls.

Temperatures in Pantanal

September marks the end of the dry season in Pantanal. Temperatures are warm, usually 77°F to 95°F (25°C to 35°C), with humidity increasing as the rainy season approaches.

For a better understanding of Pantanal's particular characteristics, read our guide to visiting Brazil's Pantanal.

What about crowds and costs?

September in Brazil is a laid-back time with fewer tourists, maintaining the calmer atmosphere of previous months. Tourist destinations are still less crowded, ensuring a more relaxed vacation. Reduced demand often results in economical travel: accommodations and activities are offered on a budget. 

Although some attractions may be undergoing maintenance, the overall travel experience benefits from the relaxed atmosphere and potential savings, making September an attractive time for those looking for a more intimate and budget-friendly Brazilian adventure.

Looking for a budget travel destination? Check out our list of the 20 cheapest places to travel around the world.

Things to do in Brazil in September

There are many exciting things to do in Brazil, but we suggest you check out the most interesting ones to do in September.

Wildlife watching in the Pantanal

September is a prime time for wildlife watching in the Pantanal, the world’s largest tropical wetland. As the dry season continues, water levels recede, concentrating wildlife around shrinking water sources. Birdwatchers will also be thrilled, as the Pantanal is home to over 650 bird species, including toucans, jabiru storks, and the striking hyacinth macaw.

Whale watching in Santa Catarina

September is an excellent time to witness the awe-inspiring migration of humpback and southern right whales along the coast of Santa Catarina. These magnificent creatures travel to the warm waters off Brazil’s southern coast to mate and give birth. Join a guided whale-watching tour for an up-close encounter, where you’ll see them breach, tail-slap, and nurture their young.

Hiking in Chapada Diamantina

Trekking through Chapada Diamantina National Park in September is a hiker’s dream. With pleasant spring temperatures and fewer rainy days, this is the perfect time to explore the park’s stunning landscapes. The park boasts dramatic waterfalls like the famous Cachoeira da Fumaça, mysterious caves such as Poço Encantado, and sweeping plateaus that offer panoramic views of the region’s rugged beauty.

Coffee plantation tours in Minas Gerais

Explore the lush coffee-growing regions of Minas Gerais, Brazil’s coffee heartland, in September when the spring blooms add to the scenic beauty. Tour family-run coffee plantations, learn about traditional and modern coffee production methods, and see the beans being processed before they reach your cup.

Snorkeling in Fernando de Noronha

September’s calm seas and warm weather make it an ideal time to snorkel in the pristine waters of Fernando de Noronha. This UNESCO-protected archipelago is known for its crystal-clear visibility and vibrant marine life. Dive into the turquoise waters to explore colorful coral reefs teeming with tropical fish, sea turtles, rays, and even playful dolphins.

Rough Guides tip: Find even more ideas for your autumn adventure with our guide to the best places to travel in September.

Festivals and events in Brazil in September

September in Brazil is a vibrant time with various events and festivals that reflect the country's rich cultural world. Here are some notable events and festivals of September:

• Independence Day (Dia da Independência), September 7: Parades, concerts, and patriotic events across the country mark Brazil's Independence Day. Celebrations are especially colorful in major cities such as Brasilia, Rio de Janeiro, and São Paulo.
• Rock in Rio, Rio de Janeiro: Although this world-famous music festival is not an annual event and is schedule-dependent, it is often held in September and brings together international and Brazilian artists for an unforgettable experience.
• Fenachamp in Garibaldi, Rio Grande do Sul: This festival dedicated to Brazilian sparkling wine offers wine tastings, gourmet food, and live music in the heart of wine country.

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