September weather forecast
San Martín de Bolaños, Mexico

September, the first month of the autumn in San Martín de Bolaños, is still a warm month, with an average temperature fluctuating between 16.9°C (62.4°F) and 28.9°C (84°F).

Temperature

September's presence marks an average high-temperature of a still moderately hot 28.9°C (84°F), subtly varied from August's 29.6°C (85.3°F). San Martín de Bolaños documents a substantial deviation from daytime highs with a consistent low-temperature of 16.9°C (62.4°F) during September nights.

Heat index

In September, the heat index is appraised at a fiery hot 35°C (95°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The months with the highest humidity in San Martín de Bolaños, Mexico, are August and September, with an average relative humidity of 82%.

Rainfall

In San Martín de Bolaños, during September, the rain falls for 27.3 days and regularly aggregates up to 163mm (6.42") of precipitation. In San Martín de Bolaños, during the entire year, the rain falls for 150.3 days and collects up to 849mm (33.43") of precipitation.

Daylight

In San Martín de Bolaños, the average length of the day in September is 12h and 16min.
On the first day of September in San Martín de Bolaños, sunrise is at 5:39 am and sunset at 6:11 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 5:44 pm MST.

Sunshine

The average sunshine in September in San Martín de Bolaños is 8.7h.

UV index

The months with the highest UV index are March through July and September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.