September weather forecastChemax, Mexico

September

Weather in September

The first month of the autumn, September, is also a hot month in Chemax, Mexico, with an average temperature fluctuating between 22.5°C (72.5°F) and 33.2°C (91.8°F).

Temperature

The commencement of September records an average high-temperature of a still tropical 33.2°C (91.8°F), barely varying from August's 34.5°C (94.1°F). In the month of September, an average of 22.5°C (72.5°F) marks the low-temperature in Chemax.

Heat index

The heat index for September is calculated to be a blazing hot 50°C (122°F). Take heed: Heat exhaustion and heat cramps are anticipated. Heatstroke is a potential outcome of continuous activity.
Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

September and October, with an average relative humidity of 82%, are the most humid months in Chemax.

Rainfall

In Chemax, Mexico, in September, during 23.8 rainfall days, 67mm (2.64") of precipitation is typically accumulated. In Chemax, during the entire year, the rain falls for 195.8 days and collects up to 599mm (23.58") of precipitation.

Daylight

In September, the average length of the day is 12h and 15min.
On the first day of September, sunrise is at 5:35 am and sunset at 6:07 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 5:40 pm CST.

Sunshine

In Chemax, the average sunshine in September is 7.9h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 during September translates into the following guidance:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.

Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in September, in Chemax, is 33.2°C (91.8°F) and the average low-temperature is 22.5°C (72.5°F). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 50°C (122°F).

The months with the highest humidity in Chemax, Mexico, are September and October, with an average relative humidity of 82%.

In Chemax, Mexico, the average relative humidity in September is 82%.

In Chemax, Mexico, in September, it is raining for 23.8 days, with typically 67mm (2.64") of accumulated precipitation.

In September, the average day length in Chemax is 12h and 15min.

In September, on the first day of the month, sunrise is at 5:35 am and sunset at 6:07 pm. On the last day of the month, in Chemax, sunrise is at 5:42 am and sunset at 5:40 pm CST.

In September, the average sunshine duration is 7.9h.

March through September, with an average maximum UV index of 7, are months with the highest UV index.

In Chemax, Mexico, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

34.5°C

33.2°C

31.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.1km/h

8.3km/h

9.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

7.9

3.5

6.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Chemax, Mexico

Average high temperature in September: 33.2°C

The warmest month (with the highest average high temperature) is May (34.8°C).
The month with the lowest average high temperature is January (28.2°C).

Average low temperature in September: 22.5°C

The month with the highest average low temperature is June (23.3°C).
The coldest month (with the lowest average low temperature) is January (17.8°C).

Average pressure in September
Chemax, Mexico

Average pressure in September: 1012.1mbar

The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is September (1012.1mbar).

Average wind speed in September
Chemax, Mexico

Average wind speed in September: 7.9km/h

The windiest month (with the highest average wind speed) is April (12.6km/h).
The calmest month (with the lowest average wind speed) is September (7.9km/h).

Average humidity in September
Chemax, Mexico

Average humidity in September: 82%

The months with the highest relative humidity are September and October (82%).
The months with the lowest relative humidity are March and April (68%).

Average rainfall in September
Chemax, Mexico

Average rainfall in September: 67mm

The wettest month (with the highest rainfall) is June (116mm).
The driest month (with the least rainfall) is March (18mm).

Average rainfall days in September
Chemax, Mexico

Average rainfall days in September: 23.8 days

The month with the highest number of rainy days is September (23.8 days).
The months with the least rainy days are February and March (9.3 days).

Average daylight in September /
Average sunshine in September
Chemax, Mexico

Average daylight in September: 12h and 18min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

Average sunshine in September: 7h and 54min

The month with the most sunshine is May (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).

Average sunshine days in September
Chemax, Mexico

Average sunshine days in September: 3.5 days

The month with the most sunshine days is March (19.2 days).
The month with the least sunshine days is September (3.5 days).

Average UV index in September
Chemax, Mexico

Average UV index in September: 7

The months with the highest UV index are March, April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, October, November and December (UV index 6).