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
Weather in September
Temperature
In São Sebastião do Tocantins, September is identified by the highest average temperatures, reaching a peak of 34.6°C (94.3°F) and a low of 21.6°C (70.9°F).Heat index
September's heat index is evaluated at a scorching 43°C (109.4°F). On guard: Heat exhaustion and heat cramps are predicted. Heatstroke is a potential hazard with continuous physical effort.Research indicates the heat index considers values in shaded locales and with light winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
In September, the average relative humidity in São Sebastião do Tocantins, Brazil, is 58%.Rainfall
In São Sebastião do Tocantins, in September, it is raining for 11.5 days, with typically 21mm (0.83") of accumulated precipitation. Throughout the year, there are 252.6 rainfall days, and 1607mm (63.27") of precipitation is accumulated.Daylight
In São Sebastião do Tocantins, the average length of the day in September is 12h and 5min.On the first day of the month, sunrise is at 06:12 and sunset at 18:13. On the last day of September, sunrise is at 05:58 and sunset at 18:07 -03.
Sunshine
In September, the average sunshine is 9.7h.UV index
The months with the highest UV index are July through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 7 in September translates into these instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What time of the year is the hottest in São Sebastião do Tocantins?
How hot does it get in São Sebastião do Tocantins in September?
What is the average humidity in September in São Sebastião do Tocantins?
How many days does it rain in September in São Sebastião do Tocantins?
What is the average length of the day in September in São Sebastião do Tocantins?
When is the sunrise / sunset in September in São Sebastião do Tocantins?
How many hours of sunshine does São Sebastião do Tocantins have in September?
What is the month with the highest UV index in São Sebastião do Tocantins?
How high is the UV index in September in São Sebastião do Tocantins?
Average temperature in September
São Sebastião do Tocantins, Brazil
- Average high temperature in September: 34.6°C
The warmest month (with the highest average high temperature) is September (34.6°C).
The month with the lowest average high temperature is February (29.3°C).
- Average low temperature in September: 21.6°C
The month with the highest average low temperature is October (22.5°C).
The coldest month (with the lowest average low temperature) is July (19.6°C).
Average pressure in September
São Sebastião do Tocantins, Brazil
- Average pressure in September: 1011.1mbar
The months with the highest atmospheric pressure are June and July (1013mbar).
The month with the lowest atmospheric pressure is November (1009mbar).
Average wind speed in September
São Sebastião do Tocantins, Brazil
- Average wind speed in September: 7km/h
The windiest months (with the highest average wind speed) are August and September (7km/h).
The calmest month (with the lowest average wind speed) is April (4.4km/h).
Average humidity in September
São Sebastião do Tocantins, Brazil
- Average humidity in September: 58%
The months with the highest relative humidity are February, March and April (90%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
São Sebastião do Tocantins, Brazil
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is March (268mm).
The driest month (with the least rainfall) is August (8mm).
Average rainfall days in September
São Sebastião do Tocantins, Brazil
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is January (30.1 days).
The month with the least rainy days is August (5.5 days).
Average daylight in September /
Average sunshine in September
São Sebastião do Tocantins, Brazil
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is October (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
São Sebastião do Tocantins, Brazil
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is February (0.2 days).
Average UV index in September
São Sebastião do Tocantins, Brazil
- Average UV index in September: 7
The months with the highest UV index are July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, October, November and December (UV index 6).
Average cloud cover in September
São Sebastião do Tocantins, Brazil
- Average cloud cover in September: 25
The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
São Sebastião do Tocantins, 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 May (6km).
São Sebastião do Tocantins, Brazil
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