September weather forecastRio do Antônio, Brazil
September
Weather in September
September, the first month of the spring in Rio do Antônio, is a tropical month, with an average temperature fluctuating between 18.3°C (64.9°F) and 30.1°C (86.2°F).Temperature
September's advent denotes a minor fluctuation in the average high-temperature to a hot 30.1°C (86.2°F) from August's 27.8°C (82°F). September's nights in Rio do Antônio observe an average temperature of 18.3°C (64.9°F).Heat index
During September, the heat index is calculated to be a tropical 33°C (91.4°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. 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 particularly relevant to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
September is the least humid month in Rio do Antônio, with an average relative humidity of 60%.Rainfall
In September, the rain falls for 5.9 days. Throughout September, 5mm (0.2") of precipitation is accumulated. Throughout the year, there are 157.3 rainfall days, and 574mm (22.6") of precipitation is accumulated.Daylight
In Rio do Antônio, the average length of the day in September is 12h and 2min.On the first day of the month, sunrise is at 05:52 and sunset at 17:43. On the last day of September, sunrise is at 05:31 and sunset at 17:44 -03.
Sunshine
In September, the average sunshine is 8.2h.UV index
September is the month with the highest UV index, 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 radiation for average individuals.Note: In September, a regular UV index of 7 translates into these guidelines:
Guard oneself from overexposure. Defence against sun injury is vital. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rio do Antônio, Brazil
- Average high temperature in September: 30.1°C
The warmest month (with the highest average high temperature) is October (30.7°C).
The month with the lowest average high temperature is July (26.5°C).
- Average low temperature in September: 18.3°C
The month with the highest average low temperature is October (19.9°C).
The coldest month (with the lowest average low temperature) is July (16.9°C).
Average pressure in September
Rio do Antônio, Brazil
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is July (1019.4mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).
Average wind speed in September
Rio do Antônio, Brazil
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is September (12.8km/h).
The calmest month (with the lowest average wind speed) is April (7.9km/h).
Average humidity in September
Rio do Antônio, Brazil
- Average humidity in September: 60%
The month with the highest relative humidity is April (77%).
The month with the lowest relative humidity is September (60%).
Average rainfall in September
Rio do Antônio, Brazil
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is December (102mm).
The driest month (with the least rainfall) is August (3mm).
Average rainfall days in September
Rio do Antônio, Brazil
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is August (5.3 days).
Average daylight in September /
Average sunshine in September
Rio do Antônio, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 0min).
The month with the shortest days is June (Average daylight: 11h and 18min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is February (Average sunshine: 9h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).
Average sunshine days in September
Rio do Antônio, Brazil
- Average sunshine days in September: 19.4 days
The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is February (7.4 days).
Average UV index in September
Rio do Antônio, Brazil
- Average UV index in September: 7
The month with the highest UV index is September (UV index 7).
The month with the lowest UV index is June (UV index 5).
Average cloud cover in September
Rio do Antônio, Brazil
- Average cloud cover in September: 31
The month with the most cloud cover is April (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Rio do Antônio, Brazil
- Average visibility in September: 10km
The months with the highest visibility are August, September and October (10km).
The months with the lowest visibility are January, February, March, April and December (8km).
