Rio de Janeiro Weather in September
Brazil · September climate averages and travel tips
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 high | 26°C (80°F) |
|---|---|
| Average low | 19°C (67°F) |
| Daily mean | 22°C (72°F) |
| Rainfall | 62 mm (2.4 in) |
| Rainy days (1 mm+) | 9 |
| Humidity | 77% |
| Cloud cover | 56% |
| Daylight | 11.9 hours |
| Est. sunshine | 5.8 hours/day |
| Wind | 11.1 km/h |
| vs August | 1°C warmer than August, with 23 mm more rain. |
What to pack for Rio de Janeiro in September
- light, breathable clothing
- sunscreen and a hat
Rio de Janeiro weather in other months
← AugustBest time to visit Rio de JaneiroOctober →
Better weather in September nearby
- Santiago22°C · 12 mm · Excellent
- Mendoza23°C · 7 mm · Excellent
- Cordoba25°C · 29 mm · Excellent
- Arequipa26°C · 7 mm · Excellent
- Sucre23°C · 15 mm · Excellent
Nearby in September
- Belo Horizonte31°C · 37 mm
- Guarulhos27°C · 67 mm
- Sao Paulo27°C · 69 mm
- Campinas30°C · 60 mm
- Curitiba24°C · 116 mm
- Florianopolis23°C · 140 mm
Where else is good in September? See where to go in September.