BrazilAverage weather for Itajaí in September
It's hot in September in Itajaí with an average temperature of 30°C. Temperatures this month range from a low of 27°C to a high of 31°C. At night, you can expect temperatures between 16°C and 20°C.
Start of September
The month of September starts in Itajaí with hot temps, averaging around 29°C during the day and nights around 18°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers.
Mid September
By mid-September, daytime temps rise to around 31°C, with nights around 18°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
Since it cools down at night, it’s a good idea to wear layers.
End of September
By the end of September, the average daytime temperature in Itajaí is around 31°C, while nighttime temps are about 19°C. A shower might pop up, but overall, the weather will be dry and sunny.
Because temperatures drop in the evening, wearing layers is recommended.
In September, there is an average of 47 mm of precipitation, spread over 10 days. The wind speed is around 3 Bft, mostly coming from the East.
Itajaí in September |
New York | ||
|---|---|---|---|
 Average temperature |
30°C | 27°C | |
 Max. temperature |
31°C | 31°C | |
| Min. temperature |
27°C | -5°C | |
 Total precipitation |
47 mm | 57 mm | |
| Rainy days |
10 days | 9 days | |
August
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Itajaí?
September is a good month to be in Itajaí for sunny weather. You’ll have high temperatures and not too much rain.
Temperature records
With 40°C in 2023, Itajaí reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 19°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 11°C to a highest value of 24°C.
Check out the climate of Itajaí for all months and discover the best travel time
Curious about the weather in other parts of Brazil? Check out the climate and weather for spots like Rio de Janeiro, Salvador, Pipa, or explore other destinations in Brazil.
Daily Temperature in September in Itajaí
This chart shows the average daily high and low temperatures in September for Itajaí, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Itajaí
The chart below shows the average daily precipitation in September for Itajaí, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 10 days of precipitation in Itajaí.
Daily UV index in September in Itajaí
This chart shows the average daily UV index in September in Itajaí, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Itajaí over the years
This chart shows the average temperature in September in Itajaí, measured in degrees Celsius, over the past few years.
Total precipitation in September in Itajaí over the years
This chart shows the average precipitation in September in Itajaí, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Itajaí
Click on any day in September to get detailed info about the usual weather on that day in Itajaí. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Itajaí
Have you been to Itajaí in September?
Share your weather experience in September in Itajaí.
Average weather in Itajaí by month
Click on a month below to see detailed weather info for Itajaí. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
