September weather forecast
Marakkanam, India

September, the last month of the rainy (monsoon) season in Marakkanam, is another hot month, with an average temperature varying between 26°C (78.8°F) and 33.6°C (92.5°F).

Temperature

The arrival of September brings an average high-temperature of a still hot 33.6°C (92.5°F), subtly diverging from August's 34.4°C (93.9°F). Marakkanam records an average nighttime low-temperature of 26°C (78.8°F) throughout September.

Heat index

For most parts of September, the heat index is calculated to be a blisteringly hot 44°C (111.2°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. 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. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Marakkanam, the average relative humidity in September is 68%.

Rainfall

In Marakkanam, during September, the rain falls for 24.2 days and regularly aggregates up to 88mm (3.46") of precipitation. Throughout the year, there are 168.6 rainfall days, and 684mm (26.93") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of September in Marakkanam, sunrise is at 5:59 am and sunset at 6:20 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 6:01 pm IST.

Sunshine

The average sunshine in September in Marakkanam, India, is 8.9h.

UV index

The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.