September weather forecastSalem, India

Weather in September

September, the last month of the rainy (monsoon) season in Salem, is another tropical month, with an average temperature varying between 22.9°C (73.2°F) and 32.3°C (90.1°F).

Temperature

The transition from August to September sees average high-temperatures adjusting to a still tropical 32.3°C (90.1°F), from a not significantly different 32.6°C (90.7°F). An average low-temperature of 22.9°C (73.2°F) marks the nights in Salem throughout September.

Heat index

During September, the heat index is estimated at a blisteringly hot 41°C (105.8°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. 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. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Salem, the average relative humidity in September is 69%.

Rainfall

In September, the rain falls for 19.8 days. Throughout September, 90mm (3.54") of precipitation is accumulated. In Salem, during the entire year, the rain falls for 177.5 days and collects up to 801mm (31.54") of precipitation.

Daylight

The average length of the day in September is 12h and 11min.
On the first day of the month, sunrise is at 6:07 am and sunset at 6:27 pm. On the last day of September, in Salem, sunrise is at 6:06 am and sunset at 6:08 pm IST.

Sunshine

In Salem, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September in Salem is 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 7 in September translates into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.