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
San Perlita's September reports an average high-temperature of a tropical 90.5°F (32.5°C), exhibiting a minor difference from August. San Perlita usually reports an average low-temperature of 77.9°F (25.5°C) during the month of September.Heat index
The heat index value during September is estimated at an extremely hot 107.6°F (42°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
The average relative humidity in September is 69%.Rainfall
September is the month with the most rainfall. Rain falls for 17.2 days and accumulates 2.64" (67mm) of precipitation.Daylight
In September, the average length of the day is 12h and 18min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:17 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In San Perlita, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 7 in September interprets into the following advice:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. 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 a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
What is the rainiest month in San Perlita?
How many days does it rain in September?
How many hours of daylight does San Perlita have in September?
When are sunrise and sunset in September?
How many hours of sunshine does San Perlita have in September?
How high is the UV index in September?
Average temperature in September
San Perlita, TX
- Average high temperature in September: 90.5°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (68.5°F).
- Average low temperature in September: 77.9°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (54.1°F).
Average pressure in September
San Perlita, TX
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
San Perlita, TX
- Average wind speed in September: 8.9mph
The windiest months (with the highest average wind speed) are April and May (11.9mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).
Average humidity in September
San Perlita, TX
- Average humidity in September: 69%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
San Perlita, TX
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is September (2.64").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in September
San Perlita, TX
- Average rainfall days in September: 17.2 days
The month with the highest number of rainy days is September (17.2 days).
The month with the least rainy days is July (7.4 days).
Average daylight in September /
Average sunshine in September
San Perlita, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
San Perlita, TX
- Average sunshine days in September: 10.6 days
The month with the most sunshine days is July (22.1 days).
The month with the least sunshine days is September (10.6 days).
Average UV index in September
San Perlita, TX
- Average UV index in September: 7
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
San Perlita, TX
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
San Perlita, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
San Perlita, Texas, USA
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