September weather forecast
Thanniyam, India

The last month of the rainy (monsoon) season, September, is also a moderately hot month in Thanniyam, India, with temperature in the range of an average low of 23.3°C (73.9°F) and an average high of 28.8°C (83.8°F).

Temperature

The arrival of September brings an average high-temperature of a still moderately hot 28.8°C (83.8°F), subtly diverging from August's 28°C (82.4°F). Nighttime temperatures in September average to a still moderately hot 23.3°C (73.9°F) in Thanniyam, India.

Heat index

The heat index for September is computed to be a fiery hot 35°C (95°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In September, the average relative humidity is 85%.

Rainfall

In Thanniyam, in September, it is raining for 25.7 days, with typically 188mm (7.4") of accumulated precipitation. Throughout the year, there are 252.6 rainfall days, and 2037mm (80.2") of precipitation is accumulated.

Daylight

In Thanniyam, the average length of the day in September is 12h and 11min.
On the first day of September in Thanniyam, sunrise is at 6:15 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 6:16 pm IST.

Sunshine

In September, the average sunshine is 7.3h.

UV index

May through October, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 6 during September leads to these instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Boost your sun resistance with garments that are densely woven yet spacious.