September weather forecastUsilampatti, India

Weather in September

September, the last month of the rainy (monsoon) season in Usilampatti, is another tropical month, with temperature in the range of an average low of 22.9°C (73.2°F) and an average high of 31.6°C (88.9°F).

Temperature

The shift into September uncovers an average high-temperature of a still tropical 31.6°C (88.9°F), maintaining the same temperature as the previous month. During September, Usilampatti records a consistent average nighttime temperature of 22.9°C (73.2°F).

Heat index

Throughout September, the heat index is calculated to be a sweltering 37°C (98.6°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Observations indicate that the heat index values are for shady locations with 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 'real feel' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values remain especially vital for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. 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. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In Usilampatti, the average relative humidity in September is 64%.

Rainfall

In Usilampatti, during September, the rain falls for 18.2 days and regularly aggregates up to 67mm (2.64") of precipitation. Throughout the year, in Usilampatti, there are 177.9 rainfall days, and 910mm (35.83") 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 6:09 am and sunset at 6:27 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 6:10 pm IST.

Sunshine

The average sunshine in September in Usilampatti is 9.2h.

UV index

February through September, with an average maximum UV index of 7, are months with the highest UV index in Usilampatti. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, an average UV index of 7 transforms into the following instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.