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
Muaná experiences an average high-temperature of a still hot 33.5°C (92.3°F) in September, subtly different from August's 33.2°C (91.8°F). In September, Muaná encounters an average low-temperature of 23.1°C (73.6°F) during the night.Heat index
The heat index value during September is calculated to be a life-threatening hot 47°C (116.6°F). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.Heat index guidelines indicate values are for light wind scenarios and shaded regions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
In Muaná, Brazil, the average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 18.6 days and accumulates 37mm (1.46") of precipitation.Daylight
In September, the average length of the day is 12h and 6min.On the first day of the month, sunrise is at 06:14 and sunset at 18:19. On the last day of September, sunrise is at 06:02 and sunset at 18:10 -03.
Sunshine
The average sunshine in September is 8.9h.UV index
The months with the highest UV index are January through March, May through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 7 in September translates into these instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
What is the average length of the day in September?
When is the sunrise / sunset in September in Muaná?
How many hours of sunshine does Muaná have in September?
What is the month with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Muaná, Brazil
- Average high temperature in September: 33.5°C
The warmest month (with the highest average high temperature) is October (34.1°C).
The months with the lowest average high temperature are February, March and April (29.9°C).
- Average low temperature in September: 23.1°C
The month with the highest average low temperature is November (24°C).
The coldest month (with the lowest average low temperature) is July (22.4°C).
Average pressure in September
Muaná, Brazil
- Average pressure in September: 1011.5mbar
The month with the highest atmospheric pressure is July (1012.7mbar).
The month with the lowest atmospheric pressure is November (1009mbar).
Average wind speed in September
Muaná, Brazil
- Average wind speed in September: 8.3km/h
The windiest months (with the highest average wind speed) are October and November (8.6km/h).
The calmest month (with the lowest average wind speed) is April (5.5km/h).
Average humidity in September
Muaná, Brazil
- Average humidity in September: 73%
The month with the highest relative humidity is April (90%).
The months with the lowest relative humidity are October and November (71%).
Average rainfall in September
Muaná, Brazil
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is April (241mm).
The driest month (with the least rainfall) is September (37mm).
Average rainfall days in September
Muaná, Brazil
- Average rainfall days in September: 18.6 days
The month with the highest number of rainy days is March (29.1 days).
The month with the least rainy days is September (18.6 days).
Average daylight in September /
Average sunshine in September
Muaná, Brazil
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 0min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is November (Average sunshine: 10h and 6min).
The month with the least sunshine is March (Average sunshine: 6h and 42min).
Average sunshine days in September
Muaná, Brazil
- Average sunshine days in September: 8.2 days
The month with the most sunshine days is August (9.9 days).
The month with the least sunshine days is February (1 days).
Average UV index in September
Muaná, Brazil
- Average UV index in September: 7
The months with the highest UV index are January, February, March, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is April (UV index 6).
Average cloud cover in September
Muaná, Brazil
- Average cloud cover in September: 31
The months with the most cloud cover are February and March (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in September
Muaná, Brazil
- Average visibility in September: 9km
The months with the highest visibility are October and November (10km).
The month with the lowest visibility is April (6km).
