September weather forecast
Pallimulla, Sri Lanka

The first month of the autumn, September, is also a moderately hot month in Pallimulla, Sri Lanka, with an average temperature varying between 28.8°C (83.8°F) and 25.2°C (77.4°F).

Temperature

Pallimulla's weather in September, with an average high-temperature of a still warm 28.8°C (83.8°F), subtly shifts from August's 28.6°C (83.5°F). Registering an almost steady temperature, Pallimulla's nights in September see an average low of 25.2°C (77.4°F).

Heat index

During September, the heat index is computed to be a fiery hot 35°C (95°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In Pallimulla, the average relative humidity in September is 82%.

Rainfall

In September, in Pallimulla, the rain falls for 26.3 days. Throughout September, 201mm (7.91") of precipitation is accumulated. Throughout the year, in Pallimulla, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of September in Pallimulla, sunrise is at 06:03 and sunset at 18:17. On the last day of the month, sunrise is at 05:58 and sunset at 18:02 +0530.

Sunshine

In September, the average sunshine is 7.6h.

UV index

January through April, July, September through December, with an average maximum UV index of 7, are months with the highest UV index in Pallimulla, Sri Lanka. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.