September weather forecast
Kaliyammahara, Sri Lanka

The first month of the autumn, September, is also a moderately hot month in Kaliyammahara, Sri Lanka, with an average temperature ranging between min 25.2°C (77.4°F) and max 28.9°C (84°F).

Temperature

Kaliyammahara, Sri Lanka, in September witnesses an average high-temperature of a still warm 28.9°C (84°F), indicating a slight variation from August's 28.6°C (83.5°F). Nighttime, during September, brings an average low of 25.2°C (77.4°F), a modest reduction from the day's peak.

Heat index

September's heat index is appraised at a sweltering 35°C (95°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The average relative humidity in September in Kaliyammahara, Sri Lanka, is 82%.

Rainfall

In Kaliyammahara, in September, during 24.3 rainfall days, 189mm (7.44") of precipitation is typically accumulated. Throughout the year, in Kaliyammahara, there are 272.3 rainfall days, and 2039mm (80.28") of precipitation is accumulated.

Daylight

The average length of the day in September in Kaliyammahara is 12h and 10min.
On the first day of the month, sunrise is at 06:02 and sunset at 18:17. On the last day of September, in Kaliyammahara, sunrise is at 05:58 and sunset at 18:02 +0530.

Sunshine

The average sunshine in September in Kaliyammahara is 7.5h.

UV index

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Kaliyammahara. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 7 during September leads to these instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.