Itaguaí Weather in September

September in Itaguaí averages 26°C (79°F) during the day and 19°C (66°F) at night. Quite a bit of rainfall is typical this month, with around 92 mm (3.6 in) on average. An umbrella is a good idea.

Rainfall in Itaguaí in September

Typically, about 11 days will experience rainfall, with an average of 92 mm (3.6 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Itaguaí in September

September tends to be one of the perfect months in Itaguaí, with 26°C (79°F) in the afternoon and 19°C (66°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Itaguaí in September

The area experiences a moderate amount of sunshine, with approximately 144 hours of sunlight expected. This means a decent mix of sun and overcast.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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• 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 Itaguaí's climate page.

Itaguaí Temperature in September

Min Temperature 19°C (66°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 36%  

Precipitation 92 mm (3.6 in)  

Rainy days 11 days  

Humidity 79% *  

Sunshine 144 hours *  

Percentage Sunshine *  

* Data from: Rio de Janeiro, Brazil (62 KM, 38 Miles).

What to Wear in Itaguaí in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Itaguaí 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 Itaguaí's climate page.

More climate data for Itaguaí

Temperature Rainfall Sunshine Humidity

See the full Itaguaí climate overview or explore weather in Brazil.