September weather forecast
Mochis, Mexico

September, the first month of the autumn in Mochis, is still a tropical month, with an average temperature fluctuating between 27.5°C (81.5°F) and 32.5°C (90.5°F).

Temperature

The transition into September is marked with an average high-temperature of a still hot 32.5°C (90.5°F), showing an insignificant shift from August's 33.3°C (91.9°F). September nights experience a minor temperature downturn to a warm 27.5°C (81.5°F).

Heat index

Throughout September, the heat index is calculated to be a blisteringly hot 42°C (107.6°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and 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 are particularly meaningful for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

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

Rainfall

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

Daylight

The average length of the day in September in Mochis is 12h and 17min.
On the first day of September, sunrise is at 5:56 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 6:03 pm MST.

Sunshine

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

UV index

The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.