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 is marked by an average high-temperature of a hot 30.6°C (87.1°F), almost identical to the preceding month. September nights showcase a dramatic shift from daytime highs to an average temperature of 17.8°C (64°F).Heat index
The heat index in September is estimated at a tropical 34°C (93.2°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 58%.Rainfall
In Guarantã, in September, it is raining for 8.6 days, with typically 40mm (1.57") of accumulated precipitation. Throughout the year, there are 195.6 rainfall days, and 1139mm (44.84") of precipitation is accumulated.Daylight
The average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 06:27 and sunset at 18:09. On the last day of September, sunrise is at 05:59 and sunset at 18:16 -03.
Sunshine
In September, the average sunshine is 9.3h.UV index
January through April, July through December, with an average maximum UV index of 6, are months with the highest UV index in Guarantã. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What are the least humid months?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
When are sunrise and sunset in September in Guarantã?
How many hours of sunshine does Guarantã have in September?
When is the highest UV index?
What is the UV index reading in September?
Average temperature in September
Guarantã, Brazil
- Average high temperature in September: 30.6°C
The warmest month (with the highest average high temperature) is October (30.7°C).
The month with the lowest average high temperature is June (24.4°C).
- Average low temperature in September: 17.8°C
The month with the highest average low temperature is December (21.1°C).
The coldest month (with the lowest average low temperature) is June (15°C).
Average pressure in September
Guarantã, Brazil
- Average pressure in September: 1014.3mbar
The month with the highest atmospheric pressure is July (1018.2mbar).
The month with the lowest atmospheric pressure is December (1010.1mbar).
Average wind speed in September
Guarantã, Brazil
- Average wind speed in September: 10.6km/h
The windiest months (with the highest average wind speed) are August and September (10.6km/h).
The calmest month (with the lowest average wind speed) is February (7.3km/h).
Average humidity in September
Guarantã, Brazil
- Average humidity in September: 58%
The month with the highest relative humidity is March (85%).
The months with the lowest relative humidity are August and September (58%).
Average rainfall in September
Guarantã, Brazil
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is January (201mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days in September
Guarantã, Brazil
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is January (28.3 days).
The month with the least rainy days is August (3.9 days).
Average daylight in September /
Average sunshine in September
Guarantã, 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 2min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 7h and 18min).
Average sunshine days in September
Guarantã, Brazil
- Average sunshine days in September: 19.1 days
The month with the most sunshine days is August (26.1 days).
The month with the least sunshine days is February (1.9 days).
Average UV index in September
Guarantã, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are May and June (UV index 5).
Average cloud cover in September
Guarantã, Brazil
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Guarantã, 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).
