September weather forecast
Kerawalapitiya, Sri Lanka

The first month of the autumn, September, is also a moderately hot month in Kerawalapitiya, Sri Lanka, with an average temperature fluctuating between 29.1°C (84.4°F) and 24.9°C (76.8°F).

Temperature

The shift into September records an average high-temperature of a still warm 29.1°C (84.4°F), subtly varied from August's 28.9°C (84°F). Throughout September, Kerawalapitiya records a steady low-temperature average of 24.9°C (76.8°F), a minor decrease from its daytime counterpart.

Heat index

The heat index value for September is computed to be a sweltering 35°C (95°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In September, the average relative humidity in Kerawalapitiya is 81%.

Rainfall

In Kerawalapitiya, during September, the rain falls for 26.9 days and regularly aggregates up to 206mm (8.11") of precipitation. Throughout the year, in Kerawalapitiya, Sri Lanka, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

In Kerawalapitiya, Sri Lanka, the average length of the day in September 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, sunrise is at 05:58 and sunset at 18:02 +0530.

Sunshine

In Kerawalapitiya, the average sunshine in September is 7.4h.

UV index

The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.