September weather forecast
Swamimalai, India

The last month of the rainy (monsoon) season, September, is another tropical month in Swamimalai, India, with an average temperature ranging between min 25.5°C (77.9°F) and max 34.8°C (94.6°F).

Temperature

The start of September marks an average high-temperature of a tropical 34.8°C (94.6°F), hardly distinguishable from the conditions in August. In Swamimalai, in September, the average low-temperature is a warm 25.5°C (77.9°F).

Heat index

For September, the heat index is appraised at a blazing hot 47°C (116.6°F). Attention: Heat exhaustion and heat cramps are quite likely. Heatstroke becomes a risk with continued exertion.
Understand that the heat index values take into account shaded locations and mild winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In September, the average relative humidity in Swamimalai, India, is 65%.

Rainfall

In September, in Swamimalai, the rain falls for 21 days. Throughout September, 56mm (2.2") of precipitation is accumulated. Throughout the year, in Swamimalai, India, there are 178.4 rainfall days, and 608mm (23.94") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of September, sunrise is at 6:02 am and sunset at 6:22 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 6:03 pm IST.

Sunshine

In September, the average sunshine is 8.7h.

UV index

In September, the average daily maximum UV index in Swamimalai is 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during September leads to these advisories:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.