Duque de Caxias Weather in September

September is one of the perfect months to visit Duque de Caxias, with daytime temperatures of 28°C (82°F) and lows of 18°C (64°F) at night. Do note that quite a bit of rainfall is typical, averaging around 88 mm (3.5 in).

Rainfall in Duque de Caxias in September

On average, there are about 11 days with rain during this month, averaging 88 mm (3.5 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Duque de Caxias in September

September is a good time to be in Duque de Caxias. Days are perfect, reaching 28°C (82°F), with nights around 18°C (64°F). This kind of day-to-night contrast is typical for this time of year. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Duque de Caxias in September

You can expect a moderate amount of sunlight, with approximately 144 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Duque de Caxias in September

Average wind speeds reach 3 m/s (6 knots) in September, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in September

At 21°C (70°F), the water is pleasant for swimming. Most people find this range ideal — cool enough to be refreshing, warm enough to stay in comfortably.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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• January
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For a detailed overview over the year and the best time to visit Brazil, check out our Duque de Caxias's climate page.

Duque de Caxias Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 28°C (82°F)  

Water Temperature 21°C (70°F) *  

Chance of Rain 37%  

Precipitation 88 mm (3.5 in)  

Rainy days 11 days  

Humidity 79% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 144 hours *  

Percentage Sunshine *  

* Data from: Rio de Janeiro, Brazil (20 KM, 12 Miles).

What to Wear in Duque de Caxias in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Expect water temperatures of around 21°C (70°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Duque de Caxias 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 Duque de Caxias's climate page.

More climate data for Duque de Caxias

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Duque de Caxias climate overview or explore weather in Brazil.