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
September
Weather in September
Temperature
In Unión Roja, September's average high-temperature stands at a still tropical 30.1°C (86.2°F), closely related to the preceding month. Unión Roja throughout September, records an average low-temperature of 23.9°C (75°F).Heat index
The average heat index in September is estimated at a very hot 37°C (98.6°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.In reference to the heat index, it's for places in shade and with a slight wind. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'real feel', determines the feeling of heat when you account for the relative humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
The months with the highest humidity are September and October, with an average relative humidity of 76%.Rainfall
In Unión Roja, in September, it is raining for 27.8 days, with typically 182mm (7.17") of accumulated precipitation. Throughout the year, there are 227 rainfall days, and 1231mm (48.46") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 13min.On the first day of the month, sunrise is at 5:56 am and sunset at 6:20 pm. On the last day of September, sunrise is at 5:58 am and sunset at 5:58 pm CST.
Sunshine
In September, the average sunshine is 10.6h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index in Unión Roja. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
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?
How many days does it rain in September?
How many hours of daylight does Unión Roja have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Unión Roja have in September?
What are the months with the highest UV index?
When is the lowest UV index?
How high is the UV index in September?
Average temperature in September
Unión Roja, Mexico
- Average high temperature in September: 30.1°C
The warmest month (with the highest average high temperature) is April (31.8°C).
The month with the lowest average high temperature is October (29.7°C).
- Average low temperature in September: 23.9°C
The month with the highest average low temperature is May (25.1°C).
The coldest months (with the lowest average low temperature) are January and December (22.2°C).
Average pressure in September
Unión Roja, Mexico
- Average pressure in September: 1012mbar
The month with the highest atmospheric pressure is January (1013.8mbar).
The month with the lowest atmospheric pressure is October (1011.6mbar).
Average wind speed in September
Unión Roja, Mexico
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is March (8.1km/h).
The calmest month (with the lowest average wind speed) is November (6.4km/h).
Average humidity in September
Unión Roja, Mexico
- Average humidity in September: 76%
The months with the highest relative humidity are September and October (76%).
The months with the lowest relative humidity are January, February and March (63%).
Average rainfall in September
Unión Roja, Mexico
- Average rainfall in September: 182mm
The wettest month (with the highest rainfall) is May (244mm).
The driest month (with the least rainfall) is January (6mm).
Average rainfall days in September
Unión Roja, Mexico
- Average rainfall days in September: 27.8 days
The month with the highest number of rainy days is May (29.1 days).
The month with the least rainy days is January (3.9 days).
Average daylight in September /
Average sunshine in September
Unión Roja, Mexico
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in September: 10h and 4min
The months with the most sunshine are May and July (Average sunshine: 11h and 12min).
The month with the least sunshine is October (Average sunshine: 7h and 6min).
Average sunshine days in September
Unión Roja, Mexico
- Average sunshine days in September: 1.3 days
The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is May (0.6 days).
Average UV index in September
Unión Roja, 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
Unión Roja, Mexico
- Average cloud cover in September: 38
The month with the most cloud cover is September (Cloud cover 38).
The months with the least cloud cover are January and December (Cloud cover 11).
Average visibility in September
Unión Roja, Mexico
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, June, July, October, November and December (10km).
The months with the lowest visibility are May, August and September (9km).
