September weather forecastManacapuru, Brazil
September
Weather in September
September, the first month of the spring in Manacapuru, is a sweltering month, with temperature in the range of an average high of 35.5°C (95.9°F) and an average low of 23.8°C (74.8°F).Temperature
Temperature records mark September as the warmest month, with highs averaging 35.5°C (95.9°F) and lows at 23.8°C (74.8°F).Heat index
The heat index for September is calculated to be a life-threatening hot 48°C (118.4°F). Prudent: Heat cramps and heat exhaustion are likely. Heatstroke becomes imminent with sustained exertion.Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
With an average relative humidity of 62%, September is the least humid month in Manacapuru.Rainfall
In Manacapuru, in September, during 14.7 rainfall days, 37mm (1.46") of precipitation is typically accumulated. In Manacapuru, during the entire year, the rain falls for 269.3 days and collects up to 1638mm (64.49") of precipitation.Daylight
In Manacapuru, Brazil, the average length of the day in September is 12h and 5min.On the first day of the month, sunrise is at 06:00 and sunset at 18:03. On the last day of September, in Manacapuru, Brazil, sunrise is at 05:48 and sunset at 17:56 -04.
Sunshine
The month with the most sunshine is September, with an average of 10h of sunshine.UV index
February, June through November, with an average maximum UV index of 7, are months with the highest UV index in Manacapuru. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 7 during September translates into the following guidance:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Manacapuru, Brazil
- Average high temperature in September: 35.5°C
The warmest month (with the highest average high temperature) is September (35.5°C).
The month with the lowest average high temperature is April (29.8°C).
- Average low temperature in September: 23.8°C
The month with the highest average low temperature is October (24.9°C).
The coldest month (with the lowest average low temperature) is July (22.6°C).
Average pressure in September
Manacapuru, Brazil
- Average pressure in September: 1009.9mbar
The month with the highest atmospheric pressure is June (1012mbar).
The month with the lowest atmospheric pressure is November (1007.8mbar).
Average wind speed in September
Manacapuru, Brazil
- Average wind speed in September: 4.8km/h
The windiest month (with the highest average wind speed) is February (5km/h).
The calmest month (with the lowest average wind speed) is May (4.1km/h).
Average humidity in September
Manacapuru, Brazil
- Average humidity in September: 62%
The month with the highest relative humidity is April (90%).
The month with the lowest relative humidity is September (62%).
Average rainfall in September
Manacapuru, Brazil
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is April (281mm).
The driest month (with the least rainfall) is August (21mm).
Average rainfall days in September
Manacapuru, Brazil
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is March (28.8 days).
The month with the least rainy days is August (10.3 days).
Average daylight in September /
Average sunshine in September
Manacapuru, Brazil
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 11h and 54min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is September (Average sunshine: 10h and 0min).
The month with the least sunshine is May (Average sunshine: 5h and 30min).
Average sunshine days in September
Manacapuru, Brazil
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is April (0.9 days).
Average UV index in September
Manacapuru, Brazil
- Average UV index in September: 7
The months with the highest UV index are February, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, March, April, May and December (UV index 6).
Average cloud cover in September
Manacapuru, Brazil
- Average cloud cover in September: 29
The months with the most cloud cover are February and April (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Manacapuru, Brazil
- Average visibility in September: 10km
The months with the highest visibility are August and September (10km).
The month with the lowest visibility is April (6km).
