September weather forecastSerra do Navio, Brazil
September
Weather in September
The first month of the autumn, September, is still a hot month in Serra do Navio, Brazil, with an average temperature fluctuating between 32.9°C (91.2°F) and 24.5°C (76.1°F).Temperature
Serra do Navio experiences an average high-temperature of a still tropical 32.9°C (91.2°F) with the onset of September, subtly varied from August's 32.3°C (90.1°F). During September, Serra do Navio records a consistent average nighttime temperature of 24.5°C (76.1°F).Heat index
Throughout September, the heat index is appraised at an extremely hot 44°C (111.2°F). Mindful: Heat cramps and heat exhaustion are to be expected. Extended physical effort might result in heatstroke.The heat index's values are generally associated with conditions in shade and light breezes. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
The average relative humidity in September is 73%.Rainfall
September and October are months with the least rain when the rain falls for 6 days and typically aggregates up to 6mm (0.24") of rain.Daylight
In Serra do Navio, Brazil, the average length of the day in September is 12h and 7min.On the first day of the month, sunrise is at 06:23 and sunset at 18:31. On the last day of September, sunrise is at 06:14 and sunset at 18:20 -03.
Sunshine
In Serra do Navio, the average sunshine in September is 9h.UV index
January through March, May through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Serra do Navio, Brazil
- Average high temperature in September: 32.9°C
The warmest month (with the highest average high temperature) is October (33.5°C).
The month with the lowest average high temperature is March (29°C).
- Average low temperature in September: 24.5°C
The month with the highest average low temperature is November (24.8°C).
The coldest month (with the lowest average low temperature) is July (23.4°C).
Average pressure in September
Serra do Navio, Brazil
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is July (1012.8mbar).
The month with the lowest atmospheric pressure is November (1009.1mbar).
Average wind speed in September
Serra do Navio, Brazil
- Average wind speed in September: 11.1km/h
The windiest months (with the highest average wind speed) are October and November (11.5km/h).
The calmest month (with the lowest average wind speed) is May (7.5km/h).
Average humidity in September
Serra do Navio, Brazil
- Average humidity in September: 73%
The months with the highest relative humidity are March and April (87%).
The months with the lowest relative humidity are October and November (71%).
Average rainfall in September
Serra do Navio, Brazil
- Average rainfall in September: 6mm
The wettest month (with the highest rainfall) is December (53mm).
The driest months (with the least rainfall) are September and October (6mm).
Average rainfall days in September
Serra do Navio, Brazil
- Average rainfall days in September: 6 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is October (5.5 days).
Average daylight in September /
Average sunshine in September
Serra do Navio, Brazil
- Average daylight in September: 12h and 6min
The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 6min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is March (Average sunshine: 6h and 0min).
Average sunshine days in September
Serra do Navio, Brazil
- Average sunshine days in September: 20.2 days
The month with the most sunshine days is October (22.6 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in September
Serra do Navio, Brazil
- Average UV index in September: 7
The months with the highest UV index are January, February, March, May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are April and December (UV index 6).
Average cloud cover in September
Serra do Navio, Brazil
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Serra do Navio, Brazil
- Average visibility in September: 10km
The months with the highest visibility are September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April and May (8km).
