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
Boca do Acre's September weather, marked by an average high temperature of 35.5°C (95.9°F) and an average low temperature of 23.1°C (73.6°F), is the warmest in the year.Heat index
For September, the heat index is evaluated at a life-threatening hot 46°C (114.8°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. 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 are of high significance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
The average relative humidity in September in Boca do Acre is 58%.Rainfall
In Boca do Acre, in September, during 11.5 rainfall days, 32mm (1.26") of precipitation is typically accumulated. In Boca do Acre, during the entire year, the rain falls for 233.4 days and collects up to 1251mm (49.25") of precipitation.Daylight
In September, the average length of the day is 12h and 4min.On the first day of the month, sunrise is at 06:30 and sunset at 18:27. On the last day of September, sunrise is at 06:13 and sunset at 18:24 -04.
Sunshine
In September, the average sunshine is 9.2h.UV index
The months with the highest UV index are July through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 7 during September, leads to the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest in Boca do Acre?
How hot does it get in Boca do Acre in September?
What is the average humidity in September in Boca do Acre?
How many days does it rain in September in Boca do Acre?
What is the average length of the day in September in Boca do Acre?
When is the sunrise / sunset in September in Boca do Acre?
How long on average sun shines in September in Boca do Acre?
What are the months with the highest UV index in Boca do Acre?
What is the UV index reading in September in Boca do Acre?
Average temperature in September
Boca do Acre, Brazil
- Average high temperature in September: 35.5°C
The warmest month (with the highest average high temperature) is September (35.5°C).
The month with the lowest average high temperature is January (29.2°C).
- Average low temperature in September: 23.1°C
The month with the highest average low temperature is September (23.1°C).
The coldest month (with the lowest average low temperature) is July (19.7°C).
Average pressure in September
Boca do Acre, Brazil
- Average pressure in September: 1010.9mbar
The month with the highest atmospheric pressure is July (1013.5mbar).
The month with the lowest atmospheric pressure is November (1008.2mbar).
Average wind speed in September
Boca do Acre, Brazil
- Average wind speed in September: 5km/h
The windiest month (with the highest average wind speed) is August (5.1km/h).
The calmest month (with the lowest average wind speed) is May (4.2km/h).
Average humidity in September
Boca do Acre, Brazil
- Average humidity in September: 58%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is August (54%).
Average rainfall in September
Boca do Acre, Brazil
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is February (200mm).
The driest month (with the least rainfall) is July (11mm).
Average rainfall days in September
Boca do Acre, Brazil
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is January (29 days).
The month with the least rainy days is August (6 days).
Average daylight in September /
Average sunshine in September
Boca do Acre, Brazil
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 36min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in September
Boca do Acre, Brazil
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is January (1.5 days).
Average UV index in September
Boca do Acre, Brazil
- Average UV index in September: 7
The months with the highest UV index are July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June and December (UV index 6).
Average cloud cover in September
Boca do Acre, Brazil
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Boca do Acre, Brazil
- Average visibility in September: 10km
The months with the highest visibility are August and September (10km).
The month with the lowest visibility is February (5km).
