End of the drier season · Weather & things to do
Rio de Janeiro in September
Little changes in Rio de Janeiro from August: highs stay near 78°F (26°C), lows near 66°F (19°C), and about 2.7 in (69 mm) of rain falls.
It scores 82/100 for comfort, 4th of 12, which makes it a solid shoulder-season month.
- Avg high
- 78°F (26°C)
- Avg low
- 66°F (19°C)
- Rain
- 2.7 in (69 mm)
- Humidity
- 77%
- Cloud cover
- 57%
- Daylight
- ~11 h 53 min
- Comfort score
- 82/100 · Great
What September feels like
Highs settle around 78°F (26°C), warm enough for short sleeves.
Nights cool to an average low of 66°F (19°C).
With 77% average humidity, it feels muggy.
Showers are part of the month, adding up to about 2.7 in (69 mm).
Plan around September
September is shoulder season: good weather, a step below the best months (June – August).
- Comfort slips from 90/100 in August to 82/100.
- September sits inside the Apr – Jun, Sep – Nov window our Rio, Ilha Grande & Paraty route recommends.
What to pack for September
- Light, breathable clotheshighs average 78°F
- Quick-dry fabrics77% average humidity
- Packable rain jacket or umbrellaabout 2.7 in of rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Rio de Janeiro in September
September is good outdoor weather here, so these picks lean toward the open air.
Ipanema Beach
Famous beach divided by lifeguard posts, with Dois Irmãos peaks at the far end.
Why now September scores 82/100 for comfort, good conditions for being outside.
Aprazível
Treehouse-like terrace restaurant in Santa Teresa serving Brazilian dishes with bay views.
Why now Highs near 78°F and 2.7 in of monthly rain make this an easy outdoor pick.
Selarón Steps
Staircase covered in tiles from around the world by artist Jorge Selarón.
Tijuca National Park
One of the world's largest urban forests, with waterfalls and trails to Pico da Tijuca.
Why now One to do outside while the weather is on your side.
Confeitaria Colombo
Belle Époque tea room from 1894 with mirrored walls, pastries and lunch.
Nearby in September
- Ilha Grande in September~65 mi · highs 82°F, 2.6 in rain · 2°C (4°F) warmer by day, about as wet
- Paraty in September~100 mi · highs 87°F, 2.5 in rain · 5°C (9°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Rio de Janeiro in September: quick answers
Is September a good time to visit Rio de Janeiro?
It's a good shoulder-season choice, scoring 82/100 against a best of 90 in June – August. Expect highs of 78°F (26°C) and 2.7 in (69 mm) of rain. September is inside the Apr – Jun, Sep – Nov window our Rio, Ilha Grande & Paraty route recommends.
How hot is Rio de Janeiro in September?
Average highs are 78°F (26°C) and average lows 66°F (19°C), making it the 5th-coldest month by daytime highs.
Does it rain a lot in Rio de Janeiro in September?
Some: about 2.7 in (69 mm) of rain falls across September on average, the 4th-driest month of the year. The annual total is about 57.9 in (1470 mm).
What should I pack for Rio de Janeiro in September?
Bring light, breathable clothes (highs average 78°F), quick-dry fabrics (77% average humidity), packable rain jacket or umbrella (about 2.7 in of rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on Rio de Janeiro
Routes in season in September
- Rio, Ilha Grande & Paraty Apr – Jun, Sep – Nov
Planning Rio de Janeiro in September?
Share this September plan with your group, poll everyone on dates and keep the packing list in one place.