September weather forecastArroyo Culebra, Mexico

Weather in September

September, the first month of the autumn in Arroyo Culebra, is still a tropical month, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 21.1°C (70°F).

Temperature

Arroyo Culebra commences September with an average high-temperature of a still tropical 30.8°C (87.4°F), maintaining a close resemblance to the previous month. Nighttime temperatures in Arroyo Culebra consistently average a pleasant 21.1°C (70°F) during September.

Heat index

For most parts of September, the heat index is estimated at a scorching 41°C (105.8°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. 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 'real feel', is an estimation of the warmth sensation when considering humidity levels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

January, September, November and December, with an average relative humidity of 83%, are the most humid months.

Rainfall

In Arroyo Culebra, in September, during 25.5 rainfall days, 130mm (5.12") of precipitation is typically accumulated. In Arroyo Culebra, Mexico, during the entire year, the rain falls for 209 days and collects up to 998mm (39.29") of precipitation.

Daylight

In September, the average length of the day in Arroyo Culebra is 12h and 14min.
On the first day of September in Arroyo Culebra, sunrise is at 6:11 am and sunset at 6:39 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 6:15 pm CST.

Sunshine

In September, the average sunshine in Arroyo Culebra is 8.6h.

UV index

In September, the average daily maximum UV index in Arroyo Culebra is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 6 during September morphs into the following directions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.