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
The beginning of September records an average high-temperature of a still tropical 30.6°C (87.1°F), almost echoing the conditions of the previous month. The low-temperature averages to a warm 24.3°C (75.7°F) during the nights of September.Heat index
The heat index value for September is evaluated at a fiery hot 39°C (102.2°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.For clarity, heat index numbers account for light winds and areas under shade. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
The average relative humidity in September in Petacalco is 77%.Rainfall
In Petacalco, Mexico, in September, during 14.5 rainfall days, 86mm (3.39") of precipitation is typically accumulated. In Petacalco, during the entire year, the rain falls for 78.8 days and collects up to 363mm (14.29") of precipitation.Daylight
In Petacalco, the average length of the day in September is 12h and 14min.On the first day of September, sunrise is at 6:34 am and sunset at 7:02 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:37 pm CST.
Sunshine
The month with the least sunshine in Petacalco is September, with an average of 9h of sunshine.UV index
The months with the highest UV index in Petacalco, Mexico, are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Petacalco, Mexico. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 7 in September translates into these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
How hot is it in Petacalco in September?
What is the average humidity in September in Petacalco?
How much does it rain in Petacalco in September?
What is the average length of the day in September in Petacalco?
When is the sunrise / sunset in September in Petacalco?
What is the month with the least sunshine in Petacalco?
How many hours of sunshine does Petacalco have in September?
What is the month with the highest UV index in Petacalco?
What is the month with the lowest UV index in Petacalco?
How high is the UV index in September in Petacalco?
Average temperature in September
Petacalco, Mexico
- Average high temperature in September: 30.6°C
The warmest month (with the highest average high temperature) is August (31.8°C).
The month with the lowest average high temperature is February (29.8°C).
- Average low temperature in September: 24.3°C
The month with the highest average low temperature is June (24.8°C).
The coldest months (with the lowest average low temperature) are February and March (21.6°C).
Average pressure in September
Petacalco, Mexico
- Average pressure in September: 1010.9mbar
The month with the highest atmospheric pressure is January (1013.7mbar).
The month with the lowest atmospheric pressure is May (1010.8mbar).
Average wind speed in September
Petacalco, Mexico
- Average wind speed in September: 8.2km/h
The windiest month (with the highest average wind speed) is January (8.4km/h).
The calmest month (with the lowest average wind speed) is November (7.4km/h).
Average humidity in September
Petacalco, Mexico
- Average humidity in September: 77%
The month with the highest relative humidity is October (78%).
The months with the lowest relative humidity are January and March (64%).
Average rainfall in September
Petacalco, Mexico
- Average rainfall in September: 86mm
The wettest month (with the highest rainfall) is August (89mm).
The driest month (with the least rainfall) is April (0mm).
Average rainfall days in September
Petacalco, Mexico
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is September (14.5 days).
The month with the least rainy days is March (1.2 days).
Average daylight in September /
Average sunshine in September
Petacalco, Mexico
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 9h
The month with the most sunshine is April (Average sunshine: 10h).
The month with the least sunshine is September (Average sunshine: 9h).
Average sunshine days in September
Petacalco, Mexico
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is March (30.1 days).
The month with the least sunshine days is September (12.1 days).
Average UV index in September
Petacalco, Mexico
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Petacalco, Mexico
- Average cloud cover in September: 32
The month with the most cloud cover is September (Cloud cover 32).
The month with the least cloud cover is April (Cloud cover 6).
Average visibility in September
Petacalco, 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).
Petacalco, Mexico
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