September weather forecastCaiuá, Brazil
September
Weather in September
The first month of the spring, September, is a tropical month in Caiuá, Brazil, with an average temperature varying between 30.8°C (87.4°F) and 18.6°C (65.5°F).Temperature
September notes an average high-temperature of a hot 30.8°C (87.4°F), subtly differing from August's 28.5°C (83.3°F). September presents a pronounced difference from daytime highs, with a consistent average low-temperature of 18.6°C (65.5°F).Heat index
In September, the heat index is evaluated at a tropical 34°C (93.2°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.The heat index's values are generally associated with conditions in shade and light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 58%.Rainfall
In Caiuá, in September, it is raining for 10.5 days, with typically 51mm (2.01") of accumulated precipitation. Throughout the year, there are 190.4 rainfall days, and 1184mm (46.61") of precipitation is accumulated.Daylight
In Caiuá, the average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 06:36 and sunset at 18:18. On the last day of September, sunrise is at 06:09 and sunset at 18:26 -03.
Sunshine
In Caiuá, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 6 suggests these recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Caiuá, Brazil
- Average high temperature in September: 30.8°C
The warmest month (with the highest average high temperature) is October (31.8°C).
The month with the lowest average high temperature is June (24.7°C).
- Average low temperature in September: 18.6°C
The month with the highest average low temperature is January (21.8°C).
The coldest months (with the lowest average low temperature) are June and July (15.6°C).
Average pressure in September
Caiuá, Brazil
- Average pressure in September: 1013.9mbar
The month with the highest atmospheric pressure is July (1017.9mbar).
The month with the lowest atmospheric pressure is December (1009.4mbar).
Average wind speed in September
Caiuá, Brazil
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is August (10.7km/h).
The calmest months (with the lowest average wind speed) are February and March (7.3km/h).
Average humidity in September
Caiuá, Brazil
- Average humidity in September: 58%
The month with the highest relative humidity is March (84%).
The months with the lowest relative humidity are August and September (58%).
Average rainfall in September
Caiuá, Brazil
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is January (211mm).
The driest month (with the least rainfall) is July (29mm).
Average rainfall days in September
Caiuá, Brazil
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is January (26.7 days).
The month with the least rainy days is August (5.8 days).
Average daylight in September /
Average sunshine in September
Caiuá, 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 48min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).
Average sunshine days in September
Caiuá, Brazil
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is February (3.4 days).
Average UV index in September
Caiuá, Brazil
- Average UV index in September: 6
The month with the highest UV index is August (UV index 7).
The month with the lowest UV index is May (UV index 5).
Average cloud cover in September
Caiuá, Brazil
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Caiuá, Brazil
- Average visibility in September: 10km
The months with the highest visibility are August and September (10km).
The months with the lowest visibility are January, February, March, April and May (8km).
