September weather forecastGuaçuí, Brazil
September
Weather in September
September, the first month of the spring in Guaçuí, is also a moderately hot month, with an average temperature ranging between min 17°C (62.6°F) and max 28.4°C (83.1°F).Temperature
Guaçuí's entry into September measures an average high-temperature of a still moderately hot 28.4°C (83.1°F), closely parallel to the preceding month. Guaçuí experiences a nighttime temperature average of 17°C (62.6°F) during September.Heat index
The heat index for September is computed to be a tropical 32°C (89.6°F). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
With an average relative humidity of 72%, September is the least humid month.Rainfall
In Guaçuí, in September, it is raining for 11.2 days, with typically 38mm (1.5") of accumulated precipitation. In Guaçuí, during the entire year, the rain falls for 205.2 days and collects up to 1048mm (41.26") of precipitation.Daylight
In Guaçuí, the average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 05:54 and sunset at 17:38. On the last day of September, sunrise is at 05:28 and sunset at 17:44 -03.
Sunshine
The average sunshine in September is 8h.UV index
The months with the highest UV index are January, February, August, September and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 6 during September leads to these instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Guaçuí, Brazil
- Average high temperature in September: 28.4°C
The warmest month (with the highest average high temperature) is February (29.9°C).
The month with the lowest average high temperature is June (24.6°C).
- Average low temperature in September: 17°C
The month with the highest average low temperature is January (20.1°C).
The coldest months (with the lowest average low temperature) are June and July (14.9°C).
Average pressure in September
Guaçuí, Brazil
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is July (1021mbar).
The month with the lowest atmospheric pressure is December (1012.6mbar).
Average wind speed in September
Guaçuí, Brazil
- Average wind speed in September: 6.6km/h
The windiest months (with the highest average wind speed) are September and October (6.6km/h).
The calmest month (with the lowest average wind speed) is April (4.6km/h).
Average humidity in September
Guaçuí, Brazil
- Average humidity in September: 72%
The month with the highest relative humidity is April (88%).
The month with the lowest relative humidity is September (72%).
Average rainfall in September
Guaçuí, Brazil
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is December (207mm).
The driest month (with the least rainfall) is July (10mm).
Average rainfall days in September
Guaçuí, Brazil
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is December (26.4 days).
The month with the least rainy days is July (7.2 days).
Average daylight in September /
Average sunshine in September
Guaçuí, 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: 8h and 0min
The month with the most sunshine is February (Average sunshine: 8h and 36min).
The month with the least sunshine is October (Average sunshine: 7h and 6min).
Average sunshine days in September
Guaçuí, Brazil
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is July (21.6 days).
The month with the least sunshine days is December (3.5 days).
Average UV index in September
Guaçuí, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, August, September and December (UV index 6).
The months with the lowest UV index are March, April, May, June, July, October and November (UV index 5).
Average cloud cover in September
Guaçuí, Brazil
- Average cloud cover in September: 36
The month with the most cloud cover is November (Cloud cover 60).
The months with the least cloud cover are July, August and September (Cloud cover 36).
Average visibility in September
Guaçuí, Brazil
- Average visibility in September: 9km
The months with the highest visibility are August and September (9km).
The months with the lowest visibility are April and May (6km).





