September weather forecastIgualapa, Mexico
September
Weather in September
September, the first month of the autumn in Igualapa, is still a tropical month, with temperature in the range of an average high of 30°C (86°F) and an average low of 24.5°C (76.1°F).Temperature
The transition from August to September sees an average high-temperature of a still tropical 30°C (86°F), indicating a minor variance from the prior month. Igualapa, during September nights, observes an average temperature of 24.5°C (76.1°F).Heat index
In September, the average heat index is estimated at a very hot 37°C (98.6°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
The months with the highest humidity are September and October, with an average relative humidity of 77%.Rainfall
The month with the most rainfall in Igualapa is September, when the rain falls for 23.4 days and typically aggregates up to 190mm (7.48") of precipitation.Daylight
In Igualapa, the average length of the day in September is 12h and 13min.On the first day of the month, sunrise is at 6:20 am and sunset at 6:46 pm. On the last day of September, in Igualapa, sunrise is at 6:23 am and sunset at 6:23 pm CST.
Sunshine
With an average of 8.8h 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 in Igualapa. 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 unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, an average UV index of 7 transforms into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Igualapa, Mexico
- Average high temperature in September: 30°C
The warmest month (with the highest average high temperature) is May (31.5°C).
The months with the lowest average high temperature are January and December (29.6°C).
- Average low temperature in September: 24.5°C
The month with the highest average low temperature is June (25.3°C).
The coldest months (with the lowest average low temperature) are January and February (22.8°C).
Average pressure in September
Igualapa, Mexico
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is January (1013.3mbar).
The month with the lowest atmospheric pressure is May (1010.8mbar).
Average wind speed in September
Igualapa, Mexico
- Average wind speed in September: 9.4km/h
The windiest month (with the highest average wind speed) is June (9.8km/h).
The calmest month (with the lowest average wind speed) is December (7.8km/h).
Average humidity in September
Igualapa, Mexico
- Average humidity in September: 77%
The months with the highest relative humidity are September and October (77%).
The months with the lowest relative humidity are March and April (62%).
Average rainfall in September
Igualapa, Mexico
- Average rainfall in September: 190mm
The wettest month (with the highest rainfall) is September (190mm).
The driest month (with the least rainfall) is April (1mm).
Average rainfall days in September
Igualapa, Mexico
- Average rainfall days in September: 23.4 days
The month with the highest number of rainy days is August (24.5 days).
The month with the least rainy days is February (1.1 days).
Average daylight in September /
Average sunshine in September
Igualapa, Mexico
- Average daylight in September: 12h and 12min
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 48min
The months with the most sunshine are March and April (Average sunshine: 10h and 0min).
The month with the least sunshine is September (Average sunshine: 8h and 48min).
Average sunshine days in September
Igualapa, Mexico
- Average sunshine days in September: 5.3 days
The month with the most sunshine days is March (29.3 days).
The month with the least sunshine days is August (5 days).
Average UV index in September
Igualapa, 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
Igualapa, Mexico
- Average cloud cover in September: 36
The month with the most cloud cover is September (Cloud cover 36).
The months with the least cloud cover are March and April (Cloud cover 8).
Average visibility in September
Igualapa, 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).





