Itaipu Weather in September

September in Itaipu sees daytime temperatures around 27°C (81°F) and lows of 20°C (68°F) at night. With around 78 mm (3.1 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Itaipu in September

This month experiences about 12 days of rain according to historical data, averaging 78 mm (3.1 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Itaipu in September

The perfect temperature in Itaipu in September makes it a solid month to visit, with 27°C (81°F) during the day and 20°C (68°F) at night. This kind of day-to-night contrast is typical for this time of year. With overnight lows of 20°C (68°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Itaipu 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.

Wind Speed in Itaipu in September

Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Average water temperature in September

The water sits at 21°C (70°F), which is a nice temperature for swimming. Not too cold, not too warm — most visitors are happy to spend time in the water.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Itaipu.

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

Itaipu Temperature in September

Min Temperature 20°C (68°F)  

Max Temperature 27°C (81°F)  

Water Temperature 21°C (70°F) *  

Chance of Rain 39%  

Precipitation 78 mm (3.1 in)  

Rainy days 12 days  

Humidity 79% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 144 hours *  

Percentage Sunshine *  

* Data from: Rio de Janeiro, Brazil (13 KM, 8 Miles).

What to Wear in Itaipu 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. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 21°C (70°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Itaipu 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 Itaipu's climate page.

More climate data for Itaipu

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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