September weather forecastCacoal, Brazil
September
Weather in September
The first month of the spring, September, is still a very hot month in Cacoal, Brazil, with an average temperature varying between 23.8°C (74.8°F) and 37.1°C (98.8°F).Temperature
September brings the highest temperatures, with an average high of 37.1°C (98.8°F) and an average low of 23.8°C (74.8°F).Heat index
For September, the heat index is computed to be a life-threatening hot 46°C (114.8°F). Stay vigilant: Heat cramps along with heat exhaustion are expected. Heatstroke may follow prolonged exertion.Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are largely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
In Cacoal, the average relative humidity in September is 49%.Rainfall
In Cacoal, Brazil, in September, during 12.3 rainfall days, 23mm (0.91") of precipitation is typically accumulated. In Cacoal, during the entire year, the rain falls for 235.6 days and collects up to 1420mm (55.91") of precipitation.Daylight
In Cacoal, Brazil, the average length of the day in September is 12h and 2min.On the first day of September in Cacoal, sunrise is at 06:08 and sunset at 18:02. On the last day of the month, sunrise is at 05:49 and sunset at 18:01 -04.
Sunshine
The average sunshine in September in Cacoal is 10.3h.UV index
In September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 7 during September translates into the following directions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cacoal, Brazil
- Average high temperature in September: 37.1°C
The warmest month (with the highest average high temperature) is September (37.1°C).
The month with the lowest average high temperature is February (28.7°C).
- Average low temperature in September: 23.8°C
The month with the highest average low temperature is September (23.8°C).
The coldest month (with the lowest average low temperature) is July (18.5°C).
Average pressure in September
Cacoal, Brazil
- Average pressure in September: 1010.8mbar
The month with the highest atmospheric pressure is July (1013.6mbar).
The month with the lowest atmospheric pressure is November (1008.6mbar).
Average wind speed in September
Cacoal, Brazil
- Average wind speed in September: 4.8km/h
The windiest month (with the highest average wind speed) is August (5km/h).
The calmest months (with the lowest average wind speed) are March and April (3.8km/h).
Average humidity in September
Cacoal, Brazil
- Average humidity in September: 49%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is August (44%).
Average rainfall in September
Cacoal, Brazil
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is February (237mm).
The driest month (with the least rainfall) is July (4mm).
Average rainfall days in September
Cacoal, Brazil
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is March (29.8 days).
The month with the least rainy days is July (3.3 days).
Average daylight in September /
Average sunshine in September
Cacoal, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).
- Average sunshine in September: 10h and 18min
The month with the most sunshine is October (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Cacoal, Brazil
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is July (27.1 days).
The month with the least sunshine days is February (0.7 days).
Average UV index in September
Cacoal, Brazil
- Average UV index in September: 7
The month with the highest UV index is August (UV index 8).
The month with the lowest UV index is February (UV index 5).
Average cloud cover in September
Cacoal, Brazil
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in September
Cacoal, Brazil
- Average visibility in September: 10km
The months with the highest visibility are July, August and September (10km).
The month with the lowest visibility is February (5km).
