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
September is São Félix do Piauí's warmest month, registering average high temperatures of 36.6°C (97.9°F) and lows of 23.5°C (74.3°F).Heat index
The heat index in September is estimated at a blisteringly hot 43°C (109.4°F). Remain cautious: Heat cramps along with heat exhaustion are foreseeable. Ongoing activity may precipitate heatstroke.Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
With an average relative humidity of 46%, September is the least humid month.Rainfall
The month with the least rainfall is September, when the rain falls for 7.1 days and typically collects 10mm (0.39") of precipitation.Daylight
In September, the average length of the day in São Félix do Piauí 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 São Félix do Piauí, sunrise is at 05:33 and sunset at 17:42 -03.
Sunshine
September has the most sunshine of the year in São Félix do Piauí, Brazil, 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 in São Félix do Piauí. A UV Index of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 8 in September translates into the following instructions:
Prioritize protection; rapid damage can occur to unprotected eyes and skin. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the hottest in São Félix do Piauí?
How hot does it get in São Félix do Piauí in September?
What is the least humid month in São Félix do Piauí?
What is the average humidity in September in São Félix do Piauí?
What is the driest month in São Félix do Piauí?
How many days does it rain in September in São Félix do Piauí?
How many hours of daylight does São Félix do Piauí have in September?
What time are sunrise and sunset in September in São Félix do Piauí?
What month has the most sunshine in São Félix do Piauí?
How long on average sun shines in September in São Félix do Piauí?
When is the highest UV index in São Félix do Piauí?
What is the UV index intensity in September in São Félix do Piauí?
Average temperature in September
São Félix 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
São Félix 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
São Félix 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
São Félix 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
São Félix 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
São Félix 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
São Félix do Piauí, 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 48min).
- Average sunshine in September: 9h and 4min
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
São Félix 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
São Félix 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
São Félix 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
São Félix 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).
