September weather forecast
Chengam, India

The last month of the rainy (monsoon) season, September, is another tropical month in Chengam, India, with an average temperature ranging between max 33.5°C (92.3°F) and min 24.3°C (75.7°F).

Temperature

Chengam ushers in September with an average high-temperature of a still tropical 33.5°C (92.3°F), showing a close resemblance to the previous month. The low-temperature in Chengam averages to a warm 24.3°C (75.7°F) during the nights of September.

Heat index

During September, the heat index is evaluated at a blisteringly hot 44°C (111.2°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Heat index details are generally centered around shaded locations and a mild breeze. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in September is 67%.

Rainfall

In Chengam, India, in September, it is raining for 18.2 days, with typically 44mm (1.73") of accumulated precipitation. Throughout the year, there are 143.1 rainfall days, and 343mm (13.5") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of the month, sunrise is at 6:04 am and sunset at 6:25 pm. On the last day of September, sunrise is at 6:03 am and sunset at 6:05 pm IST.

Sunshine

In September, the average sunshine is 8.7h.

UV index

The average daily maximum UV index in September in Chengam is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.