September weather forecast
Topolobampo, Mexico

September, the first month of the autumn in Topolobampo, is also a hot month, with an average temperature ranging between min 27.5°C (81.5°F) and max 32.5°C (90.5°F).

Temperature

September's advent denotes a minor fluctuation in the average high-temperature to a still tropical 32.5°C (90.5°F) from August's 33.3°C (91.9°F). An average low-temperature of 27.5°C (81.5°F) is witnessed throughout the month of September in Topolobampo, Mexico, a mere drop from the daytime peak.

Heat index

September's average heat index is computed to be a blistering 42°C (107.6°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. 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 primarily vital for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

August and September, with an average relative humidity of 69%, are the most humid months.

Rainfall

The month with the most rainfall in Topolobampo, Mexico, is September, when the rain falls for 13.1 days and typically aggregates up to 71mm (2.8") of precipitation.

Sea temperature

The months with the warmest seawater are August and September, with an average sea temperature of 30.9°C (87.6°F).
Note: Swimming in waters heated beyond 30°C (86°F) can arguably feel less refreshing.

Daylight

In Topolobampo, the average length of the day in September is 12h and 17min.
On the first day of the month, sunrise is at 5:56 am and sunset at 6:34 pm. On the last day of September, sunrise is at 6:08 am and sunset at 6:03 pm MST.

Sunshine

In Topolobampo, the average sunshine in September is 9.8h.

UV index

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat. Take note! The UV strength of the Sun elevates when reflected off water and sand.