September weather forecast
Tiruvottiyur, India

The last month of the rainy (monsoon) season, September, is also a hot month in Tiruvottiyur, India, with an average temperature varying between 27.3°C (81.1°F) and 31.6°C (88.9°F).

Temperature

Upon the beginning of September, Tiruvottiyur's high-temperatures register at a still tropical 31.6°C (88.9°F), closely mirroring the preceding month. Nighttime in Tiruvottiyur, India, during September, brings an average low of 27.3°C (81.1°F), a modest reduction from the day's peak.

Heat index

The average heat index in September is computed to be a scorching 40°C (104°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Tiruvottiyur, the average relative humidity in September is 72%.

Rainfall

In Tiruvottiyur, in September, during 23.1 rainfall days, 98mm (3.86") of precipitation is typically accumulated. In Tiruvottiyur, during the entire year, the rain falls for 157.6 days and collects up to 823mm (32.4") of precipitation.

Sea temperature

In September, the average sea temperature is 29.3°C (84.7°F).
Note: Between 25°C (77°F) and 29°C (84.2°F), water temperature is typically considered very warm and pleasurable by everyone. Water activities at these temperatures are enjoyable for extended periods without discomfort.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of the month, sunrise is at 5:57 am and sunset at 6:19 pm. On the last day of September, sunrise is at 5:58 am and sunset at 5:59 pm IST.

Sunshine

The average sunshine in September in Tiruvottiyur, India, is 10.7h.

UV index

In September, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 7 suggests this advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take note! The UV strength of the Sun elevates when reflected off water and sand.