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
With the advent of September, Igarapé-Açu's high-temperatures adjust to a still tropical 32.9°C (91.2°F), closely aligning with the preceding month. Igarapé-Açu experiences an average low-temperature of 22.1°C (71.8°F) in the month of September.Heat index
During September, the heat index is evaluated at a life-threatening hot 47°C (116.6°F). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Overheating and potential dehydration arise when body heat gain eclipses its release capability.
Humidity
The average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall in Igarapé-Açu. Rain falls for 24.7 days and accumulates 45mm (1.77") of precipitation.Daylight
In Igarapé-Açu, the average length of the day in September is 12h and 7min.On the first day of September, sunrise is at 06:07 and sunset at 18:13. On the last day of the month, sunrise is at 05:56 and sunset at 18:03 -03.
Sunshine
In September, the average sunshine is 8.2h.UV index
May, July, September through November, with an average maximum UV index of 7, are months with the highest UV index in Igarapé-Açu. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 7 during September translates into the following directions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
How hot is it in Igarapé-Açu in September?
What is the average humidity in September in Igarapé-Açu?
What is the driest month in Igarapé-Açu?
How much does it rain in Igarapé-Açu in September?
What is the average length of the day in September in Igarapé-Açu?
When are sunrise and sunset in September in Igarapé-Açu?
How many hours of sunshine does Igarapé-Açu have in September?
What is the month with the highest UV index in Igarapé-Açu?
What is the UV index intensity in September in Igarapé-Açu?
Average temperature in September
Igarapé-Açu, Brazil
- Average high temperature in September: 32.9°C
The warmest months (with the highest average high temperature) are October and November (33.5°C).
The months with the lowest average high temperature are March and April (29.7°C).
- Average low temperature in September: 22.1°C
The month with the highest average low temperature is December (23°C).
The coldest month (with the lowest average low temperature) is July (21.5°C).
Average pressure in September
Igarapé-Açu, Brazil
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is July (1012.7mbar).
The month with the lowest atmospheric pressure is November (1009.2mbar).
Average wind speed in September
Igarapé-Açu, Brazil
- Average wind speed in September: 6.9km/h
The windiest months (with the highest average wind speed) are September, October and November (6.9km/h).
The calmest month (with the lowest average wind speed) is April (4.8km/h).
Average humidity in September
Igarapé-Açu, Brazil
- Average humidity in September: 79%
The month with the highest relative humidity is April (92%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Igarapé-Açu, Brazil
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is March (252mm).
The driest month (with the least rainfall) is September (45mm).
Average rainfall days in September
Igarapé-Açu, Brazil
- Average rainfall days in September: 24.7 days
The month with the highest number of rainy days is March (30.8 days).
The month with the least rainy days is November (22.2 days).
Average daylight in September /
Average sunshine in September
Igarapé-Açu, Brazil
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 6min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 8h and 36min).
The month with the least sunshine is March (Average sunshine: 5h and 36min).
Average sunshine days in September
Igarapé-Açu, Brazil
- Average sunshine days in September: 3.9 days
The month with the most sunshine days is November (6 days).
The months with the least sunshine days are March and April (0 days).
Average UV index in September
Igarapé-Açu, Brazil
- Average UV index in September: 7
The months with the highest UV index are May, July, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, June, August and December (UV index 6).
Average cloud cover in September
Igarapé-Açu, Brazil
- Average cloud cover in September: 45
The months with the most cloud cover are March and April (Cloud cover 71).
The months with the least cloud cover are October and November (Cloud cover 44).
Average visibility in September
Igarapé-Açu, Brazil
- Average visibility in September: 7km
The months with the highest visibility are October, November and December (8km).
The month with the lowest visibility is May (5km).
Igarapé-Açu, Brazil
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