Rio de Janeiro Weather in September

Brazil · September climate averages and travel tips

Avg high26°C (80°F)
Avg low19°C (67°F)
Rainfall62 mm (2.4 in)
RatingExcellent 8.9/10

Rio de Janeiro in September sees daytime temperatures around 26°C (80°F), dropping to about 19°C (67°F) at night. The month is moderately rainy, with about 62 mm (2.4 in) of rain spread over 9 days. Humidity averages 77%, so it feels sticky and hotter than the thermometer suggests. You get roughly 11.9 hours of daylight and a mix of sun and cloud.

Is September a good time to visit Rio de Janeiro?

Yes — September is one of the best months to visit Rio de Janeiro. The weather rates excellent (8.9/10) on our comfort score.

Visiting Rio de Janeiro in September

September weather

Rio feels warm in September, but it's not at summer's stickiest. Days reach a high of 26°C, with mild evenings around 19°C. Rain falls on nine days, so showers can interrupt a beach afternoon or a walk around Centro. There's still plenty of daylight, though cloud often softens the sun.

It's a good month for Christ the Redeemer, Sugarloaf Mountain and the gardens at Parque Lage. Views can disappear in cloud, so keep a flexible day for the big lookouts. Beach time at Ipanema works too, but don't count on every day being clear and hot. Hikers, you'll likely find the Tijuca Forest trails more comfortable than in peak summer.

Holidays and local events

Brazil's Independence Day is on 7 September. In Rio, the holiday can bring civic events downtown, along with road closures or changes to traffic. Check local notices before heading through Centro that day.

Spring begins later in the month, and the city starts edging toward warmer, wetter weather. October gets noticeably rainier, so September is a useful window for sightseeing before showers become more frequent.

Crowds and practical tips

September sits within Rio's best-weather stretch, but it's usually calmer than the busy summer and Carnival periods. You'll generally find fewer holiday crowds than in December, January and February. Prices can be gentler too, though they vary around events and school breaks.

For a smoother visit to Christ the Redeemer, take the official train from Cosme Velho rather than relying on road traffic up Corcovado. The ride through Tijuca Forest is part of the outing, and cloudy conditions can change the view quickly. Keep another plan, such as Santa Teresa's museums and cafés, in reserve.

September weather at a glance

Average high26°C (80°F)
Average low19°C (67°F)
Daily mean22°C (72°F)
Rainfall62 mm (2.4 in)
Rainy days (1 mm+)9
Humidity77%
Cloud cover56%
Daylight11.9 hours
Est. sunshine5.8 hours/day
Wind11.1 km/h
vs August1°C warmer than August, with 23 mm more rain.

What to pack for Rio de Janeiro in September

Rio de Janeiro weather in other months

Jan29°C / 24°C220 mmPoorFeb29°C / 24°C167 mmPoorMar28°C / 24°C169 mmPoorApr27°C / 22°C104 mmFairMay25°C / 20°C61 mmExcellentJun25°C / 19°C44 mmExcellentJul25°C / 18°C31 mmExcellentAug25°C / 18°C39 mmExcellentSep26°C / 19°C62 mmExcellentOct27°C / 21°C120 mmFairNov27°C / 21°C215 mmPoorDec28°C / 23°C232 mmPoor

← AugustBest time to visit Rio de JaneiroOctober →

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