Rio Branco Weather in September

September in Rio Branco brings very high temperatures around 35°C (95°F) during the day, dropping to 22°C (72°F) at night, with quite a bit of rainfall expected, averaging around 86 mm (3.4 in) for the month.

Rainfall in Rio Branco in September

You can expect rain on roughly 11 days based on historical data, averaging 86 mm (3.4 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Rio Branco in September

In September, Rio Branco gets very high temperatures, with highs of 35°C (95°F). Nights cool to around 22°C (72°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With lows of 22°C (72°F), the nights are warm and generally comfortable. While these temperatures are averages, expect some days to be hotter. Choose light, airy clothing to handle the warmth effectively.

Sunshine in Rio Branco in September

The area experiences a moderate amount of sunshine, with approximately 159 hours of sunlight expected. This means a decent mix of sun and overcast.

September in Rio Branco can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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• January
• February
• March
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• May
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• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Brazil, check out our Rio Branco's climate page.

Rio Branco Temperature in September

Min Temperature 22°C (72°F)  

Max Temperature 35°C (95°F)  

Chance of Rain 37%  

Precipitation 86 mm (3.4 in)  

Rainy days 11 days  

Humidity 78%  

Sunshine 159 hours  

Percentage Sunshine  

What to Wear in Rio Branco in September

Get ready for hot weather in September! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Rio Branco in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Brazil, check out our Rio Branco's climate page.

More climate data for Rio Branco

Temperature Rainfall Sunshine Humidity

See the full Rio Branco climate overview or explore weather in Brazil.