September weather forecast
Coahuayutla de Guerrero, Mexico

September

Weather in September

September, the first month of the autumn in Coahuayutla de Guerrero, is still a tropical month, with an average temperature ranging between max 30.6°C (87.1°F) and min 24.3°C (75.7°F).

Temperature

Coahuayutla de Guerrero experiences a transition to a still tropical 30.6°C (87.1°F) in average high-temperatures with the arrival of September, not greatly differing from August's 31.8°C (89.2°F). In the month of September, Coahuayutla de Guerrero experiences an average low-temperature of 24.3°C (75.7°F).

Heat index

In September, the average heat index is calculated to be a sweltering 39°C (102.2°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold great significance to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Coahuayutla de Guerrero, in September, it is raining for 14.5 days, with typically 86mm (3.39") of accumulated precipitation. In Coahuayutla de Guerrero, during the entire year, the rain falls for 78.8 days and collects up to 363mm (14.29") of precipitation.

Daylight

In Coahuayutla de Guerrero, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:35 pm CST.

Sunshine

With an average of 9h of sunshine, September has the least sunshine of the year.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high UV index of 7 in September translates into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Frequently asked questions

Is it hot during September?
During September, Coahuayutla de Guerrero experiences an average high-temperature of 30.6°C (87.1°F) and a low-temperature of 24.3°C (75.7°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in September is calculated to be 39°C (102.2°F).
What is the average humidity in September?
In September, the average relative humidity is 77%.
How many days does it rain in September?
In September, the rain falls for 14.5 days. Throughout September, 86mm (3.39") of precipitation is accumulated.
How many hours of daylight does Coahuayutla de Guerrero have in September?
The average day length in September is 12h and 14min.
What time are sunrise and sunset in September?
On the first day of September, sunrise is at 6:32 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:35 pm CST.
What is the month with the least sunshine?
September has the least sunshine of the year, with an average of 9h of sunshine.
How many hours of sunshine does Coahuayutla de Guerrero have in September?
In September, the average sunshine duration is 9h.
What are the months with the highest UV index?
The months with the highest UV index are January through December, with an average maximum UV index of 7.
When is the lowest UV index?
January through December, with an average maximum UV index of 7, are months with the lowest UV index.
What is the UV index intensity in September?
In Coahuayutla de Guerrero, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Coahuayutla de Guerrero, Mexico
Average temperature in September
Coahuayutla de Guerrero, Mexico
  • Average high temperature in September: 30.6°C

The warmest month (with the highest average high temperature) is August (31.8°C).
The month with the lowest average high temperature is February (29.8°C).

  • Average low temperature in September: 24.3°C

The month with the highest average low temperature is June (24.8°C).
The coldest months (with the lowest average low temperature) are February and March (21.6°C).

Average pressure in September - Coahuayutla de Guerrero, Mexico
Average pressure in September
Coahuayutla de Guerrero, Mexico
  • Average pressure in September: 1010.9mbar

The month with the highest atmospheric pressure is January (1013.7mbar).
The month with the lowest atmospheric pressure is May (1010.8mbar).

Average wind speed in September - Coahuayutla de Guerrero, Mexico
Average wind speed in September
Coahuayutla de Guerrero, Mexico
  • Average wind speed in September: 8.2km/h

The windiest month (with the highest average wind speed) is January (8.4km/h).
The calmest month (with the lowest average wind speed) is November (7.4km/h).

Average humidity in September - Coahuayutla de Guerrero, Mexico
Average humidity in September
Coahuayutla de Guerrero, Mexico
  • Average humidity in September: 77%

The month with the highest relative humidity is October (78%).
The months with the lowest relative humidity are January and March (64%).

Average rainfall in September - Coahuayutla de Guerrero, Mexico
Average rainfall in September
Coahuayutla de Guerrero, Mexico
  • Average rainfall in September: 86mm

The wettest month (with the highest rainfall) is August (89mm).
The driest month (with the least rainfall) is April (0mm).

Average rainfall days in September - Coahuayutla de Guerrero, Mexico
Average rainfall days in September
Coahuayutla de Guerrero, Mexico
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is September (14.5 days).
The month with the least rainy days is March (1.2 days).

Average daylight in September / Average sunshine in September - Coahuayutla de Guerrero, Mexico
Average daylight in September /
Average sunshine in September
Coahuayutla de Guerrero, Mexico
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in September: 9h

The month with the most sunshine is April (Average sunshine: 10h).
The month with the least sunshine is September (Average sunshine: 9h).

Average sunshine days in September - Coahuayutla de Guerrero, Mexico
Average sunshine days in September
Coahuayutla de Guerrero, Mexico
  • Average sunshine days in September: 12.1 days

The month with the most sunshine days is March (30.1 days).
The month with the least sunshine days is September (12.1 days).

Average UV index in September - Coahuayutla de Guerrero, Mexico
Average UV index in September
Coahuayutla de Guerrero, 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 - Coahuayutla de Guerrero, Mexico
Average cloud cover in September
Coahuayutla de Guerrero, Mexico
  • Average cloud cover in September: 32

The month with the most cloud cover is September (Cloud cover 32).
The month with the least cloud cover is April (Cloud cover 6).

Average visibility in September - Coahuayutla de Guerrero, Mexico
Average visibility in September
Coahuayutla de Guerrero, 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).

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