September weather forecastPiracicaba, Brazil
September
Weather in September
September, the first month of the spring in Piracicaba, is still a warm month, with an average temperature fluctuating between 28.5°C (83.3°F) and 16.2°C (61.2°F).Temperature
With the arrival of September, Piracicaba's average high-temperature registers at a still warm 28.5°C (83.3°F), indicating a subtle variation from the previous month. Piracicaba experiences a significant reduction from daytime highs with an average low-temperature of 16.2°C (61.2°F) in September.Heat index
In September, the heat index is estimated at a hot 31°C (87.8°F). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.When assessing, remember that heat index measurements are for light winds and shaded spots. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
The months with the lowest humidity in Piracicaba, Brazil, are August and September, with an average relative humidity of 65%.Rainfall
In Piracicaba, in September, it is raining for 10.6 days, with typically 51mm (2.01") of accumulated precipitation. In Piracicaba, Brazil, during the entire year, the rain falls for 208.3 days and collects up to 1276mm (50.24") of precipitation.Daylight
In Piracicaba, the average length of the day in September is 11h and 58min.On the first day of the month, sunrise is at 06:20 and sunset at 18:00. On the last day of September, sunrise is at 05:51 and sunset at 18:09 -03.
Sunshine
September has the most sunshine of the year in Piracicaba, with an average of 9.1h of sunshine.UV index
February through July, September and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Piracicaba, Brazil
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is October (29.4°C).
The month with the lowest average high temperature is June (22.8°C).
- Average low temperature in September: 16.2°C
The month with the highest average low temperature is January (19.9°C).
The coldest month (with the lowest average low temperature) is June (13.6°C).
Average pressure in September
Piracicaba, Brazil
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is July (1020mbar).
The month with the lowest atmospheric pressure is December (1011.7mbar).
Average wind speed in September
Piracicaba, Brazil
- Average wind speed in September: 9.1km/h
The windiest month (with the highest average wind speed) is October (9.5km/h).
The calmest months (with the lowest average wind speed) are February and April (7km/h).
Average humidity in September
Piracicaba, Brazil
- Average humidity in September: 65%
The month with the highest relative humidity is March (85%).
The months with the lowest relative humidity are August and September (65%).
Average rainfall in September
Piracicaba, Brazil
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is January (251mm).
The driest month (with the least rainfall) is August (25mm).
Average rainfall days in September
Piracicaba, Brazil
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is January (28.3 days).
The month with the least rainy days is August (5.5 days).
Average daylight in September /
Average sunshine in September
Piracicaba, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is September (Average sunshine: 9h and 6min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).
Average sunshine days in September
Piracicaba, Brazil
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is February (1.6 days).
Average UV index in September
Piracicaba, Brazil
- Average UV index in September: 5
The months with the highest UV index are January, August, October and November (UV index 6).
The months with the lowest UV index are February, March, April, May, June, July, September and December (UV index 5).
Average cloud cover in September
Piracicaba, Brazil
- Average cloud cover in September: 23
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Piracicaba, Brazil
- Average visibility in September: 9km
The months with the highest visibility are July, August, September, October, November and December (9km).
The month with the lowest visibility is May (7km).
