Brazil in September: weather, events and where to go

At a glance

Brazil weather in September by city

These are INMET averages for 1961-1990, published by the World Meteorological Organization. “High” is the average daily maximum, “low” the average minimum.

September is a dry month for most of the interior. Brasília gets 51.9 mm, against 172.1 mm in October. In the south the nights are cool: 13.9 °C in São Paulo and 15.1 °C in Florianópolis, so a sweater is worth packing. Salvador is warm but has the most rainy days in this table, 17 on average.

According to the UK Foreign Office, the rainy season in the south and south-east runs from November to March and in the northeast from April to July, so September falls outside both.

Rio de Janeiro in September

Rio is between seasons. Afternoons average 25 °C, nights 19.2 °C, and the month has about 9 days with some rain. Beach days are possible, though the water is cooler than in summer. Hotels and tours are easier to book than in December or Carnival, which makes September a good month for a first city trip: Sugarloaf, Corcovado, the historic centre and day trips along the coast.

See our Rio weather page for the full year and the Rio itinerary for how we split the days.

7 September: Independence Day

7 September is a national holiday under Law 662 of 1949. In 2027 it is a Tuesday, so many Brazilians take the Monday off and travel. Roads out of Rio and São Paulo, domestic flights and coastal towns get busier from Friday. If your trip includes that weekend, we book transfers and hotels earlier.

Events in September 2027

• The Town, São Paulo: 4, 5, 6, 11 and 12 September 2027 at the Autódromo de Interlagos, according to the festival site and São Paulo city hall.
• Rock in Rio: we have not found official dates for 2027, so we do not plan around it.

Other events will be added when their organisers publish official dates.

Where to go in September

• The Pantanal. ICMBio calls May to September the dry season and the best time to visit; rains start in October. September is the last month in that window. Details on our Pantanal page.
• The northeast. São Luís and Fortaleza are dry and above 29 °C by day.
• Rio de Janeiro. Mild weather and lower demand than in summer.
• The Amazon from Manaus. One of the drier months there, with 83.3 mm of rain. See our Amazon page.

To combine several regions, look at our two-week Brazil itinerary.

What to plan before you go

• Layers for the south and São Paulo, where nights can drop to about 14 °C.
• Earlier bookings around 7 September and for The Town weekends in São Paulo.
• Entry: check entry requirements on official websites.

What to tell us in your request

• Your dates and how flexible they are
• Number of travellers and children’s ages
• Regions you want to see (Rio, Pantanal, northeast, Amazon, São Paulo)
• Whether you plan to attend The Town
• Type of accommodation and pace you prefer
• Language you want your guide to speak

How we help in September

We are a concierge team for trips in Brazil: we pick vetted local providers, put the plan together and stay your single contact before and during the trip. We can book a private guide in Rio, a private driver or a route across several regions with internal flights and transfers. You get a guide who speaks your language, and our team answers in English, Spanish and Portuguese.

Tours, transfers and boats can be cancelled at no cost up to 48 hours before; multi-day tours up to 14 days before. Terms and payment are set out in the proposal; you pay nothing before you confirm. Read the neighbouring months on August and October, or the whole year on best time to visit Brazil.