September weather forecast
Nilambur, India

The last month of the rainy (monsoon) season, September, is also a moderately hot month in Nilambur, India, with an average temperature fluctuating between 29.5°C (85.1°F) and 21.5°C (70.7°F).

Temperature

September observes an average high-temperature of a still warm 29.5°C (85.1°F), marking an insignificant difference from August's 28.4°C (83.1°F). In Nilambur, an average temperature of 21.5°C (70.7°F) is noted during September nights.

Heat index

The heat index value for September is appraised at a sweltering 37°C (98.6°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In September, the average relative humidity is 83%.

Rainfall

In September, the rain falls for 23 days. Throughout September, 125mm (4.92") of precipitation is accumulated. Throughout the year, in Nilambur, there are 240 rainfall days, and 1446mm (56.93") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of September in Nilambur, sunrise is at 6:14 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 6:15 pm IST.

Sunshine

In Nilambur, India, the average sunshine in September is 7.7h.

UV index

May through December, with an average maximum UV index of 6, are months with the lowest UV index in Nilambur. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 during September translates into the following guidance:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.