September weather forecastTomatlán, Mexico
September
Weather in September
September, the first month of the autumn in Tomatlán, is still a tropical month, with an average temperature varying between 23°C (73.4°F) and 31.2°C (88.2°F).Temperature
The commencement of September brings an average high-temperature of a still tropical 31.2°C (88.2°F), marking an inconsequential divergence from August. Tomatlán reports an average nighttime low-temperature of 23°C (73.4°F) in September.Heat index
The heat index in September is appraised at a scorching 42°C (107.6°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. 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. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
With an average relative humidity of 80%, September is the most humid month.Rainfall
September is the month with the most rainfall. Rain falls for 22 days and accumulates 186mm (7.32") of precipitation.Daylight
The average length of the day in September in Tomatlán is 12h and 15min.On the first day of September, sunrise is at 6:45 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:49 pm CST.
Sunshine
With an average of 8.9h of sunshine, September has the least sunshine of the year.UV index
April through October, with an average maximum UV index of 7, are months with the highest UV index in Tomatlán. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 7 in September suggests the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Tomatlán, Mexico
- Average high temperature in September: 31.2°C
The warmest months (with the highest average high temperature) are May and July (32.4°C).
The months with the lowest average high temperature are January and December (29.3°C).
- Average low temperature in September: 23°C
The month with the highest average low temperature is July (23.5°C).
The coldest month (with the lowest average low temperature) is February (18.3°C).
Average pressure in September
Tomatlán, Mexico
- Average pressure in September: 1010.6mbar
The month with the highest atmospheric pressure is January (1014.2mbar).
The month with the lowest atmospheric pressure is September (1010.6mbar).
Average wind speed in September
Tomatlán, Mexico
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is April (7.6km/h).
The calmest month (with the lowest average wind speed) is July (6.4km/h).
Average humidity in September
Tomatlán, Mexico
- Average humidity in September: 80%
The month with the highest relative humidity is September (80%).
The months with the lowest relative humidity are March and April (57%).
Average rainfall in September
Tomatlán, Mexico
- Average rainfall in September: 186mm
The wettest month (with the highest rainfall) is September (186mm).
The driest month (with the least rainfall) is April (0mm).
Average rainfall days in September
Tomatlán, Mexico
- Average rainfall days in September: 22 days
The month with the highest number of rainy days is August (22.8 days).
The month with the least rainy days is March (1.2 days).
Average daylight in September /
Average sunshine in September
Tomatlán, Mexico
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in September: 8h and 54min
The months with the most sunshine are January, March, April and May (Average sunshine: 9h and 48min).
The month with the least sunshine is September (Average sunshine: 8h and 54min).
Average sunshine days in September
Tomatlán, Mexico
- Average sunshine days in September: 6 days
The month with the most sunshine days is March (30.2 days).
The month with the least sunshine days is September (6 days).
Average UV index in September
Tomatlán, Mexico
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 6).
Average cloud cover in September
Tomatlán, Mexico
- Average cloud cover in September: 33
The months with the most cloud cover are August and September (Cloud cover 33).
The month with the least cloud cover is March (Cloud cover 8).
Average visibility in September
Tomatlán, Mexico
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The months with the lowest visibility are July, August, September and October (9km).
