Rio de Janeiro weather in September
“Mild and bright — an underrated time to visit.”
Roughly 9 rainy days across the month, on average.
In september, Rio de Janeiro settles into its warmer, more generous mood. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 27°C (80°F), cooling to 20°C after sunset. Rainfall is moderate — around 9 rainy days spread through the month. Long days of sunshine reward early starts.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
What to pack for Rio de Janeiro in September
- •Breathable cotton or linen, and a broad-brimmed hat
- •A compact travel umbrella — one you'll actually carry
- •Reef-safe sunscreen and polarised sunglasses
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Rio de Janeiro in September
- →Quick-dry travel shirtAmazon · shop this
- →UPF sun hatAmazon · shop this
- →Compact travel umbrellaAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
- →Polarized sunglassesAmazon · shop this
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Where to stay in Rio de Janeiro
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Compare hotels on Booking.com→September vs. the rest of the year
How this month compares in Rio de Janeiro. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit Rio de Janeiro
September is one of the best months to visit Rio de Janeiro — alongside April, May, October. Ten-year climate data confirms it: comfortable temperatures, manageable rainfall, and a healthy dose of sunshine.
See the full best-time-to-visit guide for Rio de JaneiroOther places with a similar climate right now
Rio de Janeiro in September — FAQ
Q01Is September a good time to visit Rio de Janeiro?
Is September a good time to visit Rio de Janeiro?
Yes — it is a good time to visit, with pleasant, comfortable weather. In September, Rio de Janeiro averages a high of 27°C (80°F) and a low of 20°C (67°F), with 71mm of rainfall across roughly 9 rainy days.
Q02What is the average temperature in Rio de Janeiro in September?
What is the average temperature in Rio de Janeiro in September?
The average high temperature in Rio de Janeiro during September is 27°C (80°F), with an average low of 20°C (67°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Rio de Janeiro have in September?
How many rainy days does Rio de Janeiro have in September?
Rio de Janeiro averages approximately 9 rainy days in September, with a total monthly rainfall of about 71mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Rio de Janeiro in September?
What should I pack for Rio de Janeiro in September?
For Rio de Janeiro in September, pack light, breathable clothing (cotton or linen), a compact umbrella or waterproof jacket, sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Rio de Janeiro in September?
How crowded is Rio de Janeiro in September?
Tourist crowds in Rio de Janeiro during September are typically moderate — shoulder season, a sweet spot between crowds and weather. Consider this when planning accommodation — prices track crowd levels closely.