Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The commencement of September brings an average high-temperature of a still warm 28.4°C (83.1°F), marking an inconsequential divergence from August. São Sebastião do Passé experiences an average low-temperature of 18.7°C (65.7°F) in the month of September.Heat index
The average heat index in September is computed to be a tropical 33°C (91.4°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
The average relative humidity in September is 81%.Rainfall
The month with the least rainfall is September, when the rain falls for 16.2 days and typically collects 26mm (1.02") of precipitation.Daylight
In São Sebastião do Passé, the average length of the day in September is 12h and 2min.On the first day of the month, sunrise is at 05:37 and sunset at 17:30. On the last day of September, in São Sebastião do Passé, sunrise is at 05:17 and sunset at 17:30 -03.
Sunshine
In São Sebastião do Passé, Brazil, the average sunshine in September is 6.4h.UV index
In São Sebastião do Passé, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
How hot does it get in São Sebastião do Passé in September?
What is the average humidity in September in São Sebastião do Passé?
What is the driest month in São Sebastião do Passé?
How many days does it rain in September in São Sebastião do Passé?
What is the average length of the day in September in São Sebastião do Passé?
When are sunrise and sunset in September in São Sebastião do Passé?
How many hours of sunshine does São Sebastião do Passé have in September?
What is the UV index intensity in September in São Sebastião do Passé?
Average temperature in September
São Sebastião do Passé, Brazil
- Average high temperature in September: 28.4°C
The warmest month (with the highest average high temperature) is March (32.5°C).
The month with the lowest average high temperature is July (26.6°C).
- Average low temperature in September: 18.7°C
The month with the highest average low temperature is March (22.1°C).
The coldest month (with the lowest average low temperature) is August (18.3°C).
Average pressure in September
São Sebastião do Passé, Brazil
- Average pressure in September: 1017.1mbar
The months with the highest atmospheric pressure are July and August (1018.2mbar).
The month with the lowest atmospheric pressure is March (1012.3mbar).
Average wind speed in September
São Sebastião do Passé, Brazil
- Average wind speed in September: 7.2km/h
The windiest months (with the highest average wind speed) are September, October and November (7.2km/h).
The calmest month (with the lowest average wind speed) is May (6.1km/h).
Average humidity in September
São Sebastião do Passé, Brazil
- Average humidity in September: 81%
The months with the highest relative humidity are May and June (87%).
The months with the lowest relative humidity are January, February and December (76%).
Average rainfall in September
São Sebastião do Passé, Brazil
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is April (101mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in September
São Sebastião do Passé, Brazil
- Average rainfall days in September: 16.2 days
The month with the highest number of rainy days is April (22.8 days).
The month with the least rainy days is December (13.7 days).
Average daylight in September /
Average sunshine in September
São Sebastião do Passé, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 24min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is January (Average sunshine: 9h and 30min).
The month with the least sunshine is May (Average sunshine: 5h and 12min).
Average sunshine days in September
São Sebastião do Passé, Brazil
- Average sunshine days in September: 8.8 days
The month with the most sunshine days is December (13.2 days).
The month with the least sunshine days is April (5.7 days).
Average UV index in September
São Sebastião do Passé, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, March, November and December (UV index 7).
The month with the lowest UV index is July (UV index 5).
Average cloud cover in September
São Sebastião do Passé, Brazil
- Average cloud cover in September: 55
The month with the most cloud cover is May (Cloud cover 65).
The months with the least cloud cover are January and February (Cloud cover 46).
Average visibility in September
São Sebastião do Passé, Brazil
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, November and December (8km).
The months with the lowest visibility are May, June and July (6km).
São Sebastião do Passé, Brazil
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