September weather forecastGuasave, Mexico
September
Weather in September
The first month of the autumn, September, is still a hot month in Guasave, Mexico, with an average temperature varying between 25.5°C (77.9°F) and 34.6°C (94.3°F).Temperature
September's presence records an average high-temperature of a tropical 34.6°C (94.3°F), closely mirroring August's climate. Guasave's nighttime temperature in September drops to an average of 25.5°C (77.9°F).Heat index
September's average heat index is computed to be a life-threatening hot 48°C (118.4°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.The standards for the heat index are set for locations in shade and under light breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
With an average relative humidity of 69%, September is the most humid month.Rainfall
The month with the most rainfall in Guasave is September, when the rain falls for 18.9 days and typically aggregates up to 90mm (3.54") of precipitation.Daylight
The average length of the day in September is 12h and 17min.On the first day of September in Guasave, Mexico, sunrise is at 5:54 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 6:01 pm MST.
Sunshine
The average sunshine in September is 10h.UV index
The months with the highest UV index in Guasave, Mexico, are June and September, with an average maximum UV index of 8. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, an average UV index of 8 transforms into the following instructions:
Always take safety measures. The skin and eyes are at risk if left exposed. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Guasave, Mexico
- Average high temperature in September: 34.6°C
The warmest month (with the highest average high temperature) is June (36.2°C).
The month with the lowest average high temperature is December (27.5°C).
- Average low temperature in September: 25.5°C
The month with the highest average low temperature is July (26.6°C).
The coldest month (with the lowest average low temperature) is February (14.1°C).
Average pressure in September
Guasave, Mexico
- Average pressure in September: 1010.4mbar
The month with the highest atmospheric pressure is January (1015.8mbar).
The month with the lowest atmospheric pressure is September (1010.4mbar).
Average wind speed in September
Guasave, Mexico
- Average wind speed in September: 9.8km/h
The windiest month (with the highest average wind speed) is June (12.6km/h).
The calmest month (with the lowest average wind speed) is August (9.7km/h).
Average humidity in September
Guasave, Mexico
- Average humidity in September: 69%
The month with the highest relative humidity is September (69%).
The month with the lowest relative humidity is May (38%).
Average rainfall in September
Guasave, Mexico
- Average rainfall in September: 90mm
The wettest month (with the highest rainfall) is September (90mm).
The driest month (with the least rainfall) is April (1mm).
Average rainfall days in September
Guasave, Mexico
- Average rainfall days in September: 18.9 days
The month with the highest number of rainy days is July (24.4 days).
The month with the least rainy days is April (1.2 days).
Average daylight in September /
Average sunshine in September
Guasave, Mexico
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is May (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in September
Guasave, Mexico
- Average sunshine days in September: 7.8 days
The month with the most sunshine days is March (28.9 days).
The month with the least sunshine days is July (3.4 days).
Average UV index in September
Guasave, Mexico
- Average UV index in September: 8
The months with the highest UV index are June and September (UV index 8).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in September
Guasave, Mexico
- Average cloud cover in September: 26
The month with the most cloud cover is July (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 8).
Average visibility in September
Guasave, 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).





