September weather forecastVellore, India

Weather in September

The last month of the rainy (monsoon) season, September, is another hot month in Vellore, India, with an average temperature fluctuating between 33°C (91.4°F) and 23.7°C (74.7°F).

Temperature

Vellore notes an average high-temperature of a still hot 33°C (91.4°F) in September, displaying minor variation from August. In September, Vellore experiences a temperature dip to an average of 23.7°C (74.7°F) at night.

Heat index

In September, the average heat index is computed to be a blisteringly hot 43°C (109.4°F). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. 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. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In September, the average relative humidity is 69%.

Rainfall

In September, in Vellore, the rain falls for 22.6 days. Throughout September, 91mm (3.58") of precipitation is accumulated. In Vellore, India, during the entire year, the rain falls for 167.6 days and collects up to 620mm (24.41") of precipitation.

Daylight

In Vellore, the average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 6:02 am and sunset at 6:24 pm. On the last day of September, in Vellore, sunrise is at 6:02 am and sunset at 6:04 pm IST.

Sunshine

In Vellore, the average sunshine in September is 8.6h.

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 exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 7 in September leads to these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.