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
September
Weather in September
Temperature
The arrival of September brings an average high-temperature of a still hot 33.5°C (92.3°F), subtly diverging from August's 32.1°C (89.8°F). September nights in São José de Piranhas bring a significant cooling from the heat of the day, with averages of 20.5°C (68.9°F).Heat index
September's average heat index is evaluated at a very hot 37°C (98.6°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
In São José de Piranhas, Brazil, the average relative humidity in September is 50%.Rainfall
September is the month with the least rainfall. Rain falls for 2.9 days and accumulates 2mm (0.08") of precipitation.Daylight
In São José de Piranhas, the average length of the day in September is 12h and 4min.On the first day of September in São José de Piranhas, sunrise is at 05:34 and sunset at 17:33. On the last day of the month, sunrise is at 05:18 and sunset at 17:28 -03.
Sunshine
The month with the most sunshine is September, with an average of 9.8h of sunshine.UV index
March, August through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 7 during September translates into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in São José de Piranhas in September?
What is the average humidity in September in São José de Piranhas?
What is the driest month in São José de Piranhas?
How much does it rain in São José de Piranhas in September?
What is the average length of the day in September in São José de Piranhas?
When are sunrise and sunset in September in São José de Piranhas?
What month has the most sunshine in São José de Piranhas?
How long on average sun shines in September in São José de Piranhas?
When is the highest UV index in São José de Piranhas?
How high is the UV index in September in São José de Piranhas?
Average temperature in September
São José de Piranhas, Brazil
- Average high temperature in September: 33.5°C
The warmest months (with the highest average high temperature) are October and November (34.3°C).
The month with the lowest average high temperature is June (29.8°C).
- Average low temperature in September: 20.5°C
The months with the highest average low temperature are November and December (22.8°C).
The coldest month (with the lowest average low temperature) is July (18.3°C).
Average pressure in September
São José de Piranhas, Brazil
- Average pressure in September: 1013.9mbar
The month with the highest atmospheric pressure is July (1015.4mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in September
São José de Piranhas, Brazil
- Average wind speed in September: 15.4km/h
The windiest month (with the highest average wind speed) is September (15.4km/h).
The calmest months (with the lowest average wind speed) are March and April (9.3km/h).
Average humidity in September
São José de Piranhas, Brazil
- Average humidity in September: 50%
The month with the highest relative humidity is April (76%).
The months with the lowest relative humidity are October and November (49%).
Average rainfall in September
São José de Piranhas, Brazil
- Average rainfall in September: 2mm
The wettest month (with the highest rainfall) is March (170mm).
The driest month (with the least rainfall) is September (2mm).
Average rainfall days in September
São José de Piranhas, Brazil
- Average rainfall days in September: 2.9 days
The month with the highest number of rainy days is March (24.2 days).
The month with the least rainy days is September (2.9 days).
Average daylight in September /
Average sunshine in September
São José de Piranhas, Brazil
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is September (Average sunshine: 9h and 48min).
The month with the least sunshine is March (Average sunshine: 7h and 30min).
Average sunshine days in September
São José de Piranhas, Brazil
- Average sunshine days in September: 26 days
The month with the most sunshine days is September (26 days).
The month with the least sunshine days is March (5.2 days).
Average UV index in September
São José de Piranhas, Brazil
- Average UV index in September: 7
The months with the highest UV index are March, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, April, May, June and July (UV index 6).
Average cloud cover in September
São José de Piranhas, Brazil
- Average cloud cover in September: 19
The month with the most cloud cover is April (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility in September
São José de Piranhas, Brazil
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September, October, November and December (10km).
The month with the lowest visibility is April (8km).
