October weather forecast
Perumanallur, India

The first month of the post-monsoon autumn, October, is still a hot month in Perumanallur, India, with an average temperature varying between 22.9°C (73.2°F) and 31.8°C (89.2°F).

Temperature

At the start of October, Perumanallur's average high-temperature reaches a still hot 31.8°C (89.2°F), subtly different from the preceding month. During October, Perumanallur records an average temperature of 22.9°C (73.2°F) at night.

Heat index

During October, the heat index is evaluated at an extremely hot 40°C (104°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in October is 71%.

Rainfall

October is the month with the most rainfall. Rain falls for 23 days and accumulates 193mm (7.6") of precipitation.

Daylight

In Perumanallur, the average length of the day in October is 11h and 53min.
On the first day of the month, sunrise is at 6:09 am and sunset at 6:10 pm. On the last day of October, in Perumanallur, sunrise is at 6:12 am and sunset at 5:56 pm IST.

Sunshine

In October, the average sunshine is 7.6h.

UV index

The months with the lowest UV index in Perumanallur are January, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 6 in October suggests the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.