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
Weather in September
Temperature
September's arrival brings an average high-temperature of a still warm 28.4°C (83.1°F), slightly deviating from August's 25.9°C (78.6°F). Despite higher daytime temperatures, nighttime averages fall to a refreshing 16°C (60.8°F) in September.Heat index
The heat index for September is estimated at a hot 31°C (87.8°F). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
August and September, with an average relative humidity of 65%, are the least humid months in Cosmópolis.Rainfall
In Cosmópolis, during September, the rain falls for 11.1 days and regularly aggregates up to 47mm (1.85") of precipitation. Throughout the year, in Cosmópolis, there are 187.6 rainfall days, and 941mm (37.05") of precipitation is accumulated.Daylight
In Cosmópolis, the average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 06:18 and sunset at 17:58. On the last day of September, in Cosmópolis, sunrise is at 05:49 and sunset at 18:07 -03.
Sunshine
With an average of 9.2h of sunshine, September has the most sunshine of the year.UV index
The months with the highest UV index are January through March, September through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the UV index of 6 transforms into the following advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
How hot is September in Cosmópolis?
What is the least humid month in Cosmópolis?
What is the average humidity in September in Cosmópolis?
How much does it rain in Cosmópolis in September?
What is the average length of the day in September in Cosmópolis?
What time are sunrise and sunset in September in Cosmópolis?
What month has the most sunshine in Cosmópolis?
How long on average sun shines in September in Cosmópolis?
When is the highest UV index in Cosmópolis?
How high is the UV index in September in Cosmópolis?
Average temperature in September
Cosmópolis, Brazil
- Average high temperature in September: 28.4°C
The warmest month (with the highest average high temperature) is October (28.9°C).
The month with the lowest average high temperature is June (22.8°C).
- Average low temperature in September: 16°C
The month with the highest average low temperature is December (19.5°C).
The coldest month (with the lowest average low temperature) is June (13.3°C).
Average pressure in September
Cosmópolis, Brazil
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is July (1020.2mbar).
The month with the lowest atmospheric pressure is December (1011.9mbar).
Average wind speed in September
Cosmópolis, Brazil
- Average wind speed in September: 9.2km/h
The windiest month (with the highest average wind speed) is October (9.6km/h).
The calmest months (with the lowest average wind speed) are February and April (7.3km/h).
Average humidity in September
Cosmópolis, Brazil
- Average humidity in September: 65%
The months with the highest relative humidity are January, February and March (84%).
The months with the lowest relative humidity are August and September (65%).
Average rainfall in September
Cosmópolis, Brazil
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is January (166mm).
The driest month (with the least rainfall) is August (25mm).
Average rainfall days in September
Cosmópolis, Brazil
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is January (24.7 days).
The month with the least rainy days is August (6.6 days).
Average daylight in September /
Average sunshine in September
Cosmópolis, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 36min).
Average sunshine days in September
Cosmópolis, Brazil
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is August (24.1 days).
The month with the least sunshine days is January (5.3 days).
Average UV index in September
Cosmópolis, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, March, September, October, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July and August (UV index 5).
Average cloud cover in September
Cosmópolis, Brazil
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Cosmópolis, Brazil
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February, March, April, May, June and December (8km).
Cosmópolis, Brazil
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