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 snowfall in September
- Average snowfall 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
In the transition to September, San Felipe observes a minor drop in the average high-temperature, shifting from a tropical 94.6°F (34.8°C) in August to a still hot 88.3°F (31.3°C). An average nighttime temperature of 71.4°F (21.9°C) is witnessed in San Felipe throughout September.Heat index
The heat index value for September is calculated to be an extremely hot 104°F (40°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.Heat index data is primarily for areas with shade and subjected to light winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
In September, the average relative humidity in San Felipe is 75%.Rainfall
In San Felipe, in September, during 18.5 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. Throughout the year, in San Felipe, there are 176.6 rainfall days, and 32.2" (818mm) of precipitation is accumulated.Snowfall
February through November are months without snowfall.Daylight
The average length of the day in September in San Felipe is 12h and 20min.On the first day of September, sunrise is at 7:01 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:10 pm CDT.
Sunshine
The average sunshine in September in San Felipe is 8.5h.UV index
The average daily maximum UV index in September in San Felipe is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
How hot is September in San Felipe?
What is the average humidity in September in San Felipe?
How many days does it rain in September in San Felipe?
When it does not snow in San Felipe?
How many hours of daylight does San Felipe have in September?
When are sunrise and sunset in September in San Felipe?
How many hours of sunshine does San Felipe have in September?
How high is the UV index in September in San Felipe?
Average temperature in September
San Felipe, TX
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (60.8°F).
- Average low temperature in September: 71.4°F
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (44.6°F).
Average pressure in September
San Felipe, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
San Felipe, TX
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in September
San Felipe, TX
- Average humidity in September: 75%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
San Felipe, TX
- Average rainfall in September: 3.62"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days in September
San Felipe, TX
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is September (18.5 days).
The month with the least rainy days is January (11.9 days).
Average snowfall in September
San Felipe, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
San Felipe, TX
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, October and November (0 days).
Average daylight in September /
Average sunshine in September
San Felipe, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
San Felipe, TX
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in September
San Felipe, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
San Felipe, TX
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
San Felipe, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, August, September, October, November and December (6mi).
The months with the lowest visibility are March, April, May, June and July (5mi).
San Felipe, Texas, USA
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