September weather forecastAriranha, Brazil
September
Weather in September
The first month of the spring, September, is a hot month in Ariranha, Brazil, with an average temperature ranging between min 18.5°C (65.3°F) and max 31.3°C (88.3°F).Temperature
Ariranha, Brazil, experiences a minor change to a tropical 31.3°C (88.3°F) in average high-temperature during September, closely reflecting August. Ariranha registers a marked temperature plunge to a comfortable 18.5°C (65.3°F) during the cool September nights.Heat index
The heat index value for September is computed to be a tropical 34°C (93.2°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
August and September, with an average relative humidity of 54%, are the least humid months in Ariranha, Brazil.Rainfall
In Ariranha, during September, the rain falls for 8.2 days and regularly aggregates up to 44mm (1.73") of precipitation. Throughout the year, there are 204.1 rainfall days, and 1207mm (47.52") of precipitation is accumulated.Daylight
In Ariranha, Brazil, the average length of the day in September is 11h and 59min.On the first day of September in Ariranha, sunrise is at 06:23 and sunset at 18:06. On the last day of the month, sunrise is at 05:56 and sunset at 18:13 -03.
Sunshine
August and September, with an average of 9.4h of sunshine, are months with the most sunshine in Ariranha.UV index
January through April, June through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ariranha, Brazil
- Average high temperature in September: 31.3°C
The warmest month (with the highest average high temperature) is October (31.4°C).
The month with the lowest average high temperature is June (24.7°C).
- Average low temperature in September: 18.5°C
The month with the highest average low temperature is December (21°C).
The coldest month (with the lowest average low temperature) is June (15.3°C).
Average pressure in September
Ariranha, Brazil
- Average pressure in September: 1014.4mbar
The month with the highest atmospheric pressure is July (1018.3mbar).
The months with the lowest atmospheric pressure are November and December (1010.4mbar).
Average wind speed in September
Ariranha, Brazil
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is August (10.6km/h).
The calmest month (with the lowest average wind speed) is February (7.4km/h).
Average humidity in September
Ariranha, Brazil
- Average humidity in September: 54%
The month with the highest relative humidity is March (86%).
The months with the lowest relative humidity are August and September (54%).
Average rainfall in September
Ariranha, Brazil
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is January (226mm).
The driest month (with the least rainfall) is July (8mm).
Average rainfall days in September
Ariranha, Brazil
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is January (28.7 days).
The month with the least rainy days is August (3.9 days).
Average daylight in September /
Average sunshine in September
Ariranha, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in September: 9h and 24min
The months with the most sunshine are August and September (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 7h and 0min).
Average sunshine days in September
Ariranha, Brazil
- Average sunshine days in September: 20.6 days
The month with the most sunshine days is August (26.6 days).
The month with the least sunshine days is February (1.3 days).
Average UV index in September
Ariranha, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, June, July, August, September, October, November and December (UV index 6).
The month with the lowest UV index is May (UV index 5).
Average cloud cover in September
Ariranha, Brazil
- Average cloud cover in September: 18
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Ariranha, Brazil
- Average visibility in September: 10km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May and December (8km).
