September weather forecast
Purnankuppam, India

The last month of the rainy (monsoon) season, September, is another tropical month in Purnankuppam, India, with an average temperature fluctuating between 31.7°C (89.1°F) and 27.1°C (80.8°F).

Temperature

Purnankuppam ushers in September with an average high-temperature of a still hot 31.7°C (89.1°F), showing a close resemblance to the previous month. September sees a slight dip to an average low temperature of 27.1°C (80.8°F) from the daytime highs.

Heat index

The heat index in September is estimated at an extremely hot 41°C (105.8°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. 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 remain especially vital for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In Purnankuppam, the average relative humidity in September is 73%.

Rainfall

In Purnankuppam, in September, during 26 rainfall days, 107mm (4.21") of precipitation is typically accumulated. Throughout the year, there are 176.2 rainfall days, and 886mm (34.88") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 11min.
On the first day of the month, sunrise is at 6:00 am and sunset at 6:21 pm. On the last day of September, sunrise is at 5:59 am and sunset at 6:01 pm IST.

Sunshine

In September, the average sunshine in Purnankuppam is 9.1h.

UV index

In Purnankuppam, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.