September weather forecastJosé Bonifácio, Brazil

September

Weather in September

September, the first month of the spring in José Bonifácio, is a tropical month, with an average temperature ranging between max 32.2°C (90°F) and min 19°C (66.2°F).

Temperature

In José Bonifácio, the highest average temperatures are observed in September, with a high of 32.2°C (90°F) and a low of 19°C (66.2°F).

Heat index

The heat index value for September is calculated to be a very hot 35°C (95°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Understand that the heat index values take into account shaded locations and mild winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 52%.

Rainfall

In José Bonifácio, during September, the rain falls for 8.9 days and regularly aggregates up to 51mm (2.01") of precipitation. In José Bonifácio, during the entire year, the rain falls for 208.9 days and collects up to 1257mm (49.49") of precipitation.

Daylight

The average length of the day in September in José Bonifácio is 11h and 59min.
On the first day of September, sunrise is at 06:27 and sunset at 18:09. On the last day of the month, sunrise is at 06:00 and sunset at 18:17 -03.

Sunshine

In September, the average sunshine in José Bonifácio is 9.4h.

UV index

January, March through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

September brings the highest temperatures, with an average high of 32.2°C (90°F) and an average low of 19°C (66.2°F).

José Bonifácio in September has an average high-temperature of 32.2°C (90°F) and an average low-temperature of 19°C (66.2°F). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 35°C (95°F).

August and September, with an average relative humidity of 52%, are the least humid months.

In José Bonifácio, Brazil, the average relative humidity in September is 52%.

In José Bonifácio, Brazil, in September, during 8.9 rainfall days, 51mm (2.01") of precipitation is typically accumulated.

The average day length in September is 11h and 59min.

On the first day of September, sunrise is at 06:27 and sunset at 18:09. On the last day of the month, sunrise is at 06:00 and sunset at 18:17 -03.

The average sunshine duration in September in José Bonifácio is 9.4h.

The months with the highest UV index in José Bonifácio, Brazil, are January, March through December, with an average maximum UV index of 6.

The average daily maximum UV index in September in José Bonifácio is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

29.8°C

32.2°C

31.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11km/h

10.7km/h

10.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

26.9

11.4

Average UV index

Average cloud cover

Average visibility

Average temperature in September
José Bonifácio, Brazil

Average high temperature in September: 32.2°C

The warmest month (with the highest average high temperature) is September (32.2°C).
The month with the lowest average high temperature is June (25.3°C).

Average low temperature in September: 19°C

The month with the highest average low temperature is December (21.2°C).
The coldest month (with the lowest average low temperature) is June (15.5°C).

Average pressure in September
José Bonifácio, Brazil

Average pressure in September: 1013.9mbar

The month with the highest atmospheric pressure is July (1017.9mbar).
The months with the lowest atmospheric pressure are November and December (1010mbar).

Average wind speed in September
José Bonifácio, Brazil

Average wind speed in September: 10km/h

The windiest months (with the highest average wind speed) are August and September (10km/h).
The calmest month (with the lowest average wind speed) is February (6.9km/h).

Average humidity in September
José Bonifácio, Brazil

Average humidity in September: 52%

The month with the highest relative humidity is March (86%).
The months with the lowest relative humidity are August and September (52%).

Average rainfall in September
José Bonifácio, Brazil

Average rainfall in September: 51mm

The wettest month (with the highest rainfall) is January (224mm).
The driest month (with the least rainfall) is August (9mm).

Average rainfall days in September
José Bonifácio, Brazil

Average rainfall days in September: 8.9 days

The month with the highest number of rainy days is January (29.6 days).
The month with the least rainy days is August (3.3 days).

Average daylight in September /
Average sunshine in September
José Bonifácio, Brazil

Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).

Average sunshine in September: 9h and 24min

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 7h and 0min).

Average sunshine days in September
José Bonifácio, Brazil

Average sunshine days in September: 20 days

The month with the most sunshine days is August (26.9 days).
The month with the least sunshine days is January (1.1 days).

Average UV index in September
José Bonifácio, Brazil

Average UV index in September: 6

The months with the highest UV index are January, March, April, May, June, July, August, September, October, November and December (UV index 6).
The month with the lowest UV index is February (UV index 5).