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
The advent of September presents an average high-temperature of a moderately hot 29°C (84.2°F), maintaining a close correlation with the preceding month. During September nights, San Juan Colorado records an average temperature of 23.1°C (73.6°F).Heat index
September's average heat index is computed to be a fiery hot 35°C (95°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. 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 particularly relevant to babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
With an average relative humidity of 79%, September is the most humid month.Rainfall
September is the month with the most rainfall in San Juan Colorado. Rain falls for 27.5 days and accumulates 160mm (6.3") of precipitation.Daylight
In September, the average length of the day is 12h and 13min.On the first day of the month, sunrise is at 6:18 am and sunset at 6:44 pm. On the last day of September, in San Juan Colorado, Mexico, sunrise is at 6:21 am and sunset at 6:21 pm CST.
Sunshine
In September, the average sunshine in San Juan Colorado is 8.8h.UV index
The months with the highest UV index in San Juan Colorado are February through July and September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 7 translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in San Juan Colorado in September?
What is the most humid month in San Juan Colorado?
What is the average humidity in September in San Juan Colorado?
What is the rainiest month in San Juan Colorado?
How many days does it rain in September in San Juan Colorado?
How many hours of daylight does San Juan Colorado have in September?
When are sunrise and sunset in September in San Juan Colorado?
How many hours of sunshine does San Juan Colorado have in September?
What are the months with the highest UV index in San Juan Colorado?
What is the UV index intensity in September in San Juan Colorado?
Average temperature in September
San Juan Colorado, Mexico
- Average high temperature in September: 29°C
The warmest month (with the highest average high temperature) is May (30.9°C).
The month with the lowest average high temperature is January (28.9°C).
- Average low temperature in September: 23.1°C
The month with the highest average low temperature is May (24.6°C).
The coldest months (with the lowest average low temperature) are January and December (21°C).
Average pressure in September
San Juan Colorado, Mexico
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is January (1014.2mbar).
The month with the lowest atmospheric pressure is May (1011.5mbar).
Average wind speed in September
San Juan Colorado, Mexico
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is April (8.9km/h).
The calmest month (with the lowest average wind speed) is November (7.1km/h).
Average humidity in September
San Juan Colorado, Mexico
- Average humidity in September: 79%
The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is March (63%).
Average rainfall in September
San Juan Colorado, Mexico
- Average rainfall in September: 160mm
The wettest month (with the highest rainfall) is September (160mm).
The driest month (with the least rainfall) is December (2mm).
Average rainfall days in September
San Juan Colorado, Mexico
- Average rainfall days in September: 27.5 days
The month with the highest number of rainy days is September (27.5 days).
The months with the least rainy days are January and February (3.1 days).
Average daylight in September /
Average sunshine in September
San Juan Colorado, Mexico
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is May (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 7h and 36min).
Average sunshine days in September
San Juan Colorado, Mexico
- Average sunshine days in September: 0.9 days
The month with the most sunshine days is December (26 days).
The month with the least sunshine days is September (0.9 days).
Average UV index in September
San Juan Colorado, Mexico
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July and September (UV index 7).
The months with the lowest UV index are January, August, October, November and December (UV index 6).
Average cloud cover in September
San Juan Colorado, Mexico
- Average cloud cover in September: 37
The month with the most cloud cover is September (Cloud cover 37).
The months with the least cloud cover are February and December (Cloud cover 9).
Average visibility in September
San Juan Colorado, 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 Juan Colorado, Mexico
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