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 shift to September signals an average high-temperature of a still hot 31.6°C (88.9°F), subtly varied from August's 32.6°C (90.7°F). Ciudad Constitución's average low-temperature in September is measured at a moderately hot 26.4°C (79.5°F).Heat index
The heat index value for September is evaluated at a very hot 36°C (96.8°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
With an average relative humidity of 60%, September is the most humid month.Rainfall
The month with the most rainfall is September, when the rain falls for 10.8 days and typically aggregates up to 76mm (2.99") of precipitation.Daylight
In September, the average length of the day is 12h and 17min.On the first day of September in Ciudad Constitución, sunrise is at 6:07 am and sunset at 6:44 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 6:14 pm MST.
Sunshine
The average sunshine in September in Ciudad Constitución is 9.5h.UV index
The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 7 during September morphs into the following directions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Ciudad Constitución?
What is the most humid month in Ciudad Constitución?
What is the average humidity in September in Ciudad Constitución?
What is the rainiest month in Ciudad Constitución?
How many days does it rain in September in Ciudad Constitución?
What is the average length of the day in September in Ciudad Constitución?
When is the sunrise / sunset in September in Ciudad Constitución?
How long on average sun shines in September in Ciudad Constitución?
What is the UV index reading in September in Ciudad Constitución?
Average temperature in September
Ciudad Constitución, Mexico
- Average high temperature in September: 31.6°C
The warmest month (with the highest average high temperature) is August (32.6°C).
The month with the lowest average high temperature is January (21.6°C).
- Average low temperature in September: 26.4°C
The month with the highest average low temperature is August (27.7°C).
The coldest month (with the lowest average low temperature) is January (14.9°C).
Average pressure in September
Ciudad Constitución, Mexico
- Average pressure in September: 1009mbar
The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is September (1009mbar).
Average wind speed in September
Ciudad Constitución, Mexico
- Average wind speed in September: 9.9km/h
The windiest month (with the highest average wind speed) is December (13.3km/h).
The calmest months (with the lowest average wind speed) are July and August (9.5km/h).
Average humidity in September
Ciudad Constitución, Mexico
- Average humidity in September: 60%
The month with the highest relative humidity is September (60%).
The month with the lowest relative humidity is May (42%).
Average rainfall in September
Ciudad Constitución, Mexico
- Average rainfall in September: 76mm
The wettest month (with the highest rainfall) is September (76mm).
The driest months (with the least rainfall) are April, May and December (2mm).
Average rainfall days in September
Ciudad Constitución, Mexico
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is August (13.2 days).
The month with the least rainy days is April (1.1 days).
Average daylight in September /
Average sunshine in September
Ciudad Constitución, Mexico
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 12min).
Average sunshine days in September
Ciudad Constitución, Mexico
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is March (29.6 days).
The month with the least sunshine days is August (14.4 days).
Average UV index in September
Ciudad Constitución, Mexico
- Average UV index in September: 7
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, February, November and December (UV index 5).
Average cloud cover in September
Ciudad Constitución, Mexico
- Average cloud cover in September: 17
The months with the most cloud cover are July and September (Cloud cover 17).
The months with the least cloud cover are May and June (Cloud cover 6).
Average visibility in September
Ciudad Constitución, Mexico
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
