September weather forecastPrata do Piauí, Brazil
September
Weather in September
September, the first month of the spring in Prata do Piauí, is also a sweltering month, with an average temperature fluctuating between 23.5°C (74.3°F) and 36.6°C (97.9°F).Temperature
Temperature readings reach their annual highs in September, averaging 36.6°C (97.9°F) and a minimum average of 23.5°C (74.3°F).Heat index
The heat index value for September is evaluated at a blistering 43°C (109.4°F). Careful: Heat exhaustion and heat cramps are anticipated. With ongoing exertion, heatstroke becomes a possibility.Heat index guidelines indicate values are for light wind scenarios and shaded regions. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
With an average relative humidity of 46%, September is the least humid month.Rainfall
September is the month with the least rainfall. Rain falls for 7.1 days and accumulates 10mm (0.39") of precipitation.Daylight
In Prata do Piauí, the average length of the day in September is 12h and 5min.On the first day of the month, sunrise is at 05:48 and sunset at 17:48. On the last day of September, in Prata do Piauí, Brazil, sunrise is at 05:33 and sunset at 17:43 -03.
Sunshine
The month with the most sunshine is September, with an average of 9.6h of sunshine.UV index
With an average maximum UV index of 8, September is the month with the highest UV index. A UV Index of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV radiation for the average person.Note: In September, a daily UV index of 8 turns into the following recommendations:
Immediate damage can occur to skin and eyes if left unprotected. Always take necessary precautions. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Prata do Piauí, Brazil
- Average high temperature in September: 36.6°C
The warmest month (with the highest average high temperature) is September (36.6°C).
The month with the lowest average high temperature is April (31.4°C).
- Average low temperature in September: 23.5°C
The months with the highest average low temperature are October and November (24.5°C).
The coldest months (with the lowest average low temperature) are June, July and August (22.3°C).
Average pressure in September
Prata do Piauí, Brazil
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is July (1013.3mbar).
The month with the lowest atmospheric pressure is November (1008.8mbar).
Average wind speed in September
Prata do Piauí, Brazil
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is September (11.1km/h).
The calmest month (with the lowest average wind speed) is April (7.5km/h).
Average humidity in September
Prata do Piauí, Brazil
- Average humidity in September: 46%
The months with the highest relative humidity are March and April (81%).
The month with the lowest relative humidity is September (46%).
Average rainfall in September
Prata do Piauí, Brazil
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is March (315mm).
The driest month (with the least rainfall) is September (10mm).
Average rainfall days in September
Prata do Piauí, Brazil
- Average rainfall days in September: 7.1 days
The month with the highest number of rainy days is March (29.3 days).
The month with the least rainy days is August (6.6 days).
Average daylight in September /
Average sunshine in September
Prata do Piauí, Brazil
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is September (Average sunshine: 9h and 36min).
The month with the least sunshine is April (Average sunshine: 6h and 30min).
Average sunshine days in September
Prata do Piauí, Brazil
- Average sunshine days in September: 21 days
The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is March (1.2 days).
Average UV index in September
Prata do Piauí, Brazil
- Average UV index in September: 8
The month with the highest UV index is September (UV index 8).
The month with the lowest UV index is February (UV index 6).
Average cloud cover in September
Prata do Piauí, Brazil
- Average cloud cover in September: 25
The month with the most cloud cover is March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Prata do Piauí, Brazil
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September, October, November and December (10km).
The months with the lowest visibility are February, March and April (8km).
