September weather forecastThiruvananthapuram, India

Weather in September

September, the last month of the rainy (monsoon) season in Thiruvananthapuram, is a tropical month, with an average temperature fluctuating between 23.5°C (74.3°F) and 30.6°C (87.1°F).

Temperature

An average high-temperature of a tropical 30.6°C (87.1°F) marks September, exhibiting a close resemblance to the conditions in August. During September, Thiruvananthapuram experiences a consistent low-temperature average of 23.5°C (74.3°F).

Heat index

The heat index value for September is calculated to be an extremely hot 40°C (104°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In September, the average relative humidity is 82%.

Rainfall

In Thiruvananthapuram, in September, it is raining for 8.7 days, with typically 169mm (6.65") of accumulated precipitation. Throughout the year, in Thiruvananthapuram, there are 95.3 rainfall days, and 1754mm (69.06") of precipitation is accumulated.

Sea temperature

July through September, with an average sea temperature of 27°C (80.6°F), are months with the coldest seawater in Thiruvananthapuram.
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is seen as very warm and delightful by everyone. During these temperatures, water activities become enjoyable, without causing discomfort for extended periods.

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of September, sunrise is at 6:13 am and sunset at 6:30 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 6:13 pm IST.

Sunshine

The average sunshine in September in Thiruvananthapuram is 5.8h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, a daily UV index of 12 turns into the following recommendations:
Execute all crucial precautions. Warding off sun exposure is non-negotiable. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Frequent reapplication of a broad-spectrum SPF 30+ sunscreen is vital every two hours or directly after a swim or an outdoor workout. Warning! The Sun's UV rays intensify with reflections from sand and water.