September weather forecastMonteiro, Brazil
September
Weather in September
The first month of the spring, September, is also a moderately hot month in Monteiro, Brazil, with an average temperature ranging between min 17.2°C (63°F) and max 28.9°C (84°F).Temperature
September's average high-temperature is a still moderately hot 28.9°C (84°F), maintaining a close comparison with August's 27.3°C (81.1°F). Monteiro reports an average nighttime low-temperature of 17.2°C (63°F) in September.Heat index
September's heat index is estimated at a hot 33°C (91.4°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Take into consideration that the heat index values are calculated for shade and light wind conditions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
In September, the average relative humidity in Monteiro is 70%.Rainfall
The month with the least rainfall in Monteiro is September, when the rain falls for 5.2 days and typically collects 4mm (0.16") of precipitation.Daylight
In Monteiro, Brazil, the average length of the day in September is 12h and 4min.On the first day of the month, sunrise is at 05:29 and sunset at 17:27. On the last day of September, in Monteiro, Brazil, sunrise is at 05:13 and sunset at 17:23 -03.
Sunshine
In September, the average sunshine in Monteiro is 8.8h.UV index
In Monteiro, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Deflect overexposure. Sun protection is a necessity. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Monteiro, Brazil
- Average high temperature in September: 28.9°C
The warmest month (with the highest average high temperature) is November (31.6°C).
The month with the lowest average high temperature is July (26°C).
- Average low temperature in September: 17.2°C
The month with the highest average low temperature is March (19.9°C).
The coldest month (with the lowest average low temperature) is August (16.3°C).
Average pressure in September
Monteiro, Brazil
- Average pressure in September: 1015.8mbar
The months with the highest atmospheric pressure are July and August (1016.8mbar).
The month with the lowest atmospheric pressure is November (1011.7mbar).
Average wind speed in September
Monteiro, Brazil
- Average wind speed in September: 17.9km/h
The windiest month (with the highest average wind speed) is October (18.2km/h).
The calmest month (with the lowest average wind speed) is April (12km/h).
Average humidity in September
Monteiro, Brazil
- Average humidity in September: 70%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are November and December (62%).
Average rainfall in September
Monteiro, Brazil
- Average rainfall in September: 4mm
The wettest month (with the highest rainfall) is March (104mm).
The driest month (with the least rainfall) is September (4mm).
Average rainfall days in September
Monteiro, Brazil
- Average rainfall days in September: 5.2 days
The month with the highest number of rainy days is April (18.3 days).
The month with the least rainy days is September (5.2 days).
Average daylight in September /
Average sunshine in September
Monteiro, Brazil
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is November (Average sunshine: 9h and 30min).
The month with the least sunshine is July (Average sunshine: 6h and 30min).
Average sunshine days in September
Monteiro, Brazil
- Average sunshine days in September: 20.9 days
The months with the most sunshine days are September and October (20.9 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in September
Monteiro, Brazil
- Average UV index in September: 6
The months with the highest UV index are February and November (UV index 7).
The month with the lowest UV index is July (UV index 5).
Average cloud cover in September
Monteiro, Brazil
- Average cloud cover in September: 35
The month with the most cloud cover is July (Cloud cover 54).
The month with the least cloud cover is November (Cloud cover 24).
Average visibility in September
Monteiro, Brazil
- Average visibility in September: 10km
The months with the highest visibility are January, February, September, October, November and December (10km).
The months with the lowest visibility are April, May, June and July (8km).
