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 reports an average high-temperature of a still warm 28.2°C (82.8°F), slightly varied from August's 26.6°C (79.9°F). Throughout September, the nighttime temperature averages to a refreshing 19°C (66.2°F).Heat index
For most parts of September, the heat index is appraised at a tropical 33°C (91.4°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.Note that heat index values are valued for light wind and location in the shade. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
In September, the average relative humidity in Cachoeira is 80%.Rainfall
In Cachoeira, in September, during 19.7 rainfall days, 29mm (1.14") of precipitation is typically accumulated. Throughout the year, in Cachoeira, there are 243.3 rainfall days, and 519mm (20.43") of precipitation is accumulated.Daylight
In September, the average length of the day in Cachoeira is 12h and 2min.On the first day of the month, sunrise is at 05:39 and sunset at 17:32. On the last day of September, sunrise is at 05:19 and sunset at 17:31 -03.
Sunshine
The average sunshine in September in Cachoeira is 6.7h.UV index
In Cachoeira, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 6 in September translates into this advice:
Guard oneself from overexposure. Defence against sun injury is vital. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Cachoeira during September?
What is the average humidity in September in Cachoeira?
How many days does it rain in September in Cachoeira?
How many hours of daylight does Cachoeira have in September?
When are sunrise and sunset in September in Cachoeira?
How many hours of sunshine does Cachoeira have in September?
What is the UV index intensity in September in Cachoeira?
Average temperature in September
Cachoeira, Brazil
- Average high temperature in September: 28.2°C
The warmest month (with the highest average high temperature) is March (32.6°C).
The month with the lowest average high temperature is July (26.3°C).
- Average low temperature in September: 19°C
The month with the highest average low temperature is March (22.3°C).
The coldest month (with the lowest average low temperature) is August (18.5°C).
Average pressure in September
Cachoeira, Brazil
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is July (1018.7mbar).
The months with the lowest atmospheric pressure are March and December (1012.6mbar).
Average wind speed in September
Cachoeira, Brazil
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is September (11km/h).
The calmest months (with the lowest average wind speed) are March and April (9.6km/h).
Average humidity in September
Cachoeira, Brazil
- Average humidity in September: 80%
The months with the highest relative humidity are June and July (85%).
The month with the lowest relative humidity is February (73%).
Average rainfall in September
Cachoeira, Brazil
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is February (28mm).
Average rainfall days in September
Cachoeira, Brazil
- Average rainfall days in September: 19.7 days
The month with the highest number of rainy days is August (24.7 days).
The month with the least rainy days is February (16.7 days).
Average daylight in September /
Average sunshine in September
Cachoeira, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 54min).
The month with the shortest days is June (Average daylight: 11h and 24min).
- Average sunshine in September: 6h and 4min
The months with the most sunshine are January and February (Average sunshine: 9h and 48min).
The month with the least sunshine is May (Average sunshine: 5h and 24min).
Average sunshine days in September
Cachoeira, Brazil
- Average sunshine days in September: 5.5 days
The month with the most sunshine days is March (11 days).
The month with the least sunshine days is August (3.5 days).
Average UV index in September
Cachoeira, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, March and December (UV index 7).
The months with the lowest UV index are June and July (UV index 5).
Average cloud cover in September
Cachoeira, Brazil
- Average cloud cover in September: 50
The month with the most cloud cover is May (Cloud cover 61).
The month with the least cloud cover is February (Cloud cover 39).
Average visibility in September
Cachoeira, Brazil
- Average visibility in September: 8km
The months with the highest visibility are January, February, March and November (9km).
The months with the lowest visibility are May, June and July (7km).
