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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a fiery hot 95.9°F (35.5°C) in August to a hot 90.3°F (32.4°C). During the nights in September, Riviera observes an average low-temperature of 76.3°F (24.6°C).Heat index
September's mean heat index is estimated at a blisteringly hot 107.6°F (42°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.Understanding the heat index involves considering values for shaded locales with light wind. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
The average relative humidity in September in Riviera is 70%.Rainfall
September is the month with the most rainfall. Rain falls for 13.8 days and accumulates 1.3" (33mm) of precipitation.Snowfall
In Riviera, snow does not fall in January through November.Daylight
The average length of the day in September is 12h and 19min.On the first day of September in Riviera, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:18 pm CDT.
Sunshine
In September, the average sunshine in Riviera is 8.5h.UV index
In Riviera, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 7 during September leads to these advisories:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
How hot is it in Riviera in September?
What is the average humidity in September in Riviera?
What is the wettest month in Riviera?
How much does it rain in Riviera in September?
When it does not snow in Riviera?
What is the average length of the day in September in Riviera?
What time are sunrise and sunset in September in Riviera?
How long on average sun shines in September in Riviera?
How high is the UV index in September in Riviera?
Average temperature in September
Riviera, TX
- Average high temperature in September: 90.3°F
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (65.8°F).
- Average low temperature in September: 76.3°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (50.7°F).
Average pressure in September
Riviera, TX
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Riviera, TX
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is May (11.1mph).
The calmest month (with the lowest average wind speed) is September (8.3mph).
Average humidity in September
Riviera, TX
- Average humidity in September: 70%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Riviera, TX
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is September (1.3").
The driest month (with the least rainfall) is February (0.28").
Average rainfall days in September
Riviera, TX
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is September (13.8 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in September
Riviera, TX
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Riviera, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and December (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Riviera, 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 3min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Riviera, TX
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is September (14.5 days).
Average UV index in September
Riviera, TX
- 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 and December (UV index 4).
Average cloud cover in September
Riviera, TX
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Riviera, 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).
Riviera, Texas, USA
Weather forecast for your location
2. Allow the app to use your location
