September weather forecast
Nautla, Mexico

The first month of the autumn, September, is still a warm month in Nautla, Mexico, with an average temperature fluctuating between 29.5°C (85.1°F) and 23.8°C (74.8°F).

Temperature

September's arrival shows an average high-temperature of a moderately hot 29.5°C (85.1°F), hardly different from the previous month. In the month of September, the temperature in Nautla generally rests at an average low of 23.8°C (74.8°F).

Heat index

In September, the average heat index is computed to be a sweltering 35°C (95°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Nautla, during September, the rain falls for 21.5 days and regularly aggregates up to 93mm (3.66") of precipitation. Throughout the year, there are 172.3 rainfall days, and 698mm (27.48") of precipitation is accumulated.

Daylight

In September, the average length of the day in Nautla is 12h and 15min.
On the first day of the month, sunrise is at 6:11 am and sunset at 6:42 pm. On the last day of September, sunrise is at 6:17 am and sunset at 6:15 pm CST.

Sunshine

In Nautla, the average sunshine in September is 9h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index in Nautla. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.