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 commencement is accompanied by an average high-temperature of a still hot 32.5°C (90.5°F), diverging marginally from August's 33.3°C (91.9°F). In San Miguel Zapotitlán, a slight decrease from the daytime peak is noted during the month of September, with an average low-temperature of 27.5°C (81.5°F).Heat index
The heat index for September is calculated to be a blistering 42°C (107.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
August and September, with an average relative humidity of 69%, are the most humid months.Rainfall
The month with the most rainfall is September, when the rain falls for 13.1 days and typically aggregates up to 71mm (2.8") of precipitation.Daylight
The average length of the day in September is 12h and 17min.On the first day of the month, sunrise is at 5:56 am and sunset at 6:35 pm. On the last day of September, sunrise is at 6:08 am and sunset at 6:03 pm MST.
Sunshine
In September, the average sunshine is 9.8h.UV index
In San Miguel Zapotitlán, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 7 during September translates into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What are the most humid months?
What is the average humidity in September?
What is the wettest 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?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
San Miguel Zapotitlán, Mexico
- Average high temperature in September: 32.5°C
The warmest month (with the highest average high temperature) is August (33.3°C).
The month with the lowest average high temperature is January (23.8°C).
- Average low temperature in September: 27.5°C
The month with the highest average low temperature is August (28.2°C).
The coldest months (with the lowest average low temperature) are January and February (16.6°C).
Average pressure in September
San Miguel Zapotitlán, Mexico
- Average pressure in September: 1009.5mbar
The month with the highest atmospheric pressure is January (1015.6mbar).
The month with the lowest atmospheric pressure is September (1009.5mbar).
Average wind speed in September
San Miguel Zapotitlán, Mexico
- Average wind speed in September: 12.7km/h
The windiest month (with the highest average wind speed) is February (15.4km/h).
The calmest month (with the lowest average wind speed) is August (12.5km/h).
Average humidity in September
San Miguel Zapotitlán, Mexico
- Average humidity in September: 69%
The months with the highest relative humidity are August and September (69%).
The month with the lowest relative humidity is May (52%).
Average rainfall in September
San Miguel Zapotitlán, Mexico
- Average rainfall in September: 71mm
The wettest month (with the highest rainfall) is September (71mm).
The driest month (with the least rainfall) is April (1mm).
Average rainfall days in September
San Miguel Zapotitlán, Mexico
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is May (1.2 days).
Average daylight in September /
Average sunshine in September
San Miguel Zapotitlán, 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 30min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 12min).
Average sunshine days in September
San Miguel Zapotitlán, Mexico
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is May (29.7 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in September
San Miguel Zapotitlán, Mexico
- Average UV index in September: 7
The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in September
San Miguel Zapotitlán, Mexico
- Average cloud cover in September: 20
The month with the most cloud cover is July (Cloud cover 23).
The month with the least cloud cover is May (Cloud cover 7).
Average visibility in September
San Miguel Zapotitlán, 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).
San Miguel Zapotitlán, Mexico
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