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
The onset of September notes an average high-temperature of a still tropical 34.5°C (94.1°F), subtly shifted from August's 34.1°C (93.4°F). Igarapé-Miri documents a marked decrease from day to night, with an average low of 22.5°C (72.5°F) throughout September.Heat index
September's heat index is estimated at a life-threatening hot 50°C (122°F). Note: Heat exhaustion and heat cramps are probable. Heatstroke can follow with prolonged activity.When assessing, remember that heat index measurements are for light winds and shaded spots. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
The average relative humidity in September in Igarapé-Miri is 73%.Rainfall
The month with the least rainfall in Igarapé-Miri is September, when the rain falls for 8 days and typically collects 11mm (0.43") of precipitation.Daylight
In Igarapé-Miri, the average length of the day in September is 12h and 6min.On the first day of September in Igarapé-Miri, sunrise is at 06:13 and sunset at 18:17. On the last day of the month, sunrise is at 06:01 and sunset at 18:09 -03.
Sunshine
The average sunshine in September is 8.6h.UV index
February, March, May through November, with an average maximum UV index of 7, are months with the highest UV index in Igarapé-Miri. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: In September, a regular UV index of 7 translates into these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer 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
How hot does it get in Igarapé-Miri in September?
What is the average humidity in September in Igarapé-Miri?
What is the driest month in Igarapé-Miri?
How many days does it rain in September in Igarapé-Miri?
What is the average length of the day in September in Igarapé-Miri?
When is the sunrise / sunset in September in Igarapé-Miri?
How long on average sun shines in September in Igarapé-Miri?
What is the month with the highest UV index in Igarapé-Miri?
How high is the UV index in September in Igarapé-Miri?
Average temperature in September
Igarapé-Miri, Brazil
- Average high temperature in September: 34.5°C
The warmest month (with the highest average high temperature) is October (34.8°C).
The month with the lowest average high temperature is April (30°C).
- Average low temperature in September: 22.5°C
The month with the highest average low temperature is November (23.5°C).
The coldest month (with the lowest average low temperature) is July (21.8°C).
Average pressure in September
Igarapé-Miri, Brazil
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is July (1012.6mbar).
The month with the lowest atmospheric pressure is November (1009mbar).
Average wind speed in September
Igarapé-Miri, Brazil
- Average wind speed in September: 7km/h
The windiest months (with the highest average wind speed) are October and November (7.1km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity in September
Igarapé-Miri, Brazil
- Average humidity in September: 73%
The month with the highest relative humidity is April (91%).
The months with the lowest relative humidity are October and November (71%).
Average rainfall in September
Igarapé-Miri, Brazil
- Average rainfall in September: 11mm
The wettest month (with the highest rainfall) is April (137mm).
The driest month (with the least rainfall) is September (11mm).
Average rainfall days in September
Igarapé-Miri, Brazil
- Average rainfall days in September: 8 days
The month with the highest number of rainy days is March (23.4 days).
The month with the least rainy days is September (8 days).
Average daylight in September /
Average sunshine in September
Igarapé-Miri, 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 4min
The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).
Average sunshine days in September
Igarapé-Miri, Brazil
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is September (19.2 days).
The month with the least sunshine days is March (5.8 days).
Average UV index in September
Igarapé-Miri, Brazil
- Average UV index in September: 7
The months with the highest UV index are February, March, May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, April and December (UV index 6).
Average cloud cover in September
Igarapé-Miri, Brazil
- Average cloud cover in September: 36
The months with the most cloud cover are March and April (Cloud cover 71).
The month with the least cloud cover is September (Cloud cover 36).
Average visibility in September
Igarapé-Miri, Brazil
- Average visibility in September: 9km
The months with the highest visibility are September, October and November (9km).
The months with the lowest visibility are March, April and May (5km).
