September weather forecast
Coyutla, Mexico

The first month of the autumn, September, is still a tropical month in Coyutla, Mexico, with an average temperature ranging between min 21.5°C (70.7°F) and max 31.3°C (88.3°F).

Temperature

The arrival of September coincides with an average high-temperature of a still hot 31.3°C (88.3°F), indicating a minimal shift from August's 32.8°C (91°F). During September, the temperature is averaged to a low of 21.5°C (70.7°F) at night.

Heat index

September's average heat index is calculated to be an extremely hot 43°C (109.4°F). Caution: Heat cramps along with heat exhaustion are expected. Sustained activity could lead to heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are especially vital to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Coyutla, the average relative humidity in September is 82%.

Rainfall

In Coyutla, Mexico, in September, during 22.4 rainfall days, 124mm (4.88") of precipitation is typically accumulated. Throughout the year, there are 189.3 rainfall days, and 928mm (36.54") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 15min.
On the first day of September, sunrise is at 6:15 am and sunset at 6:45 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 6:19 pm CST.

Sunshine

In September, the average sunshine in Coyutla is 7.9h.

UV index

The average daily maximum UV index in September in Coyutla is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum daily UV index of 6 during September morphs into the following directions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.