September weather forecast
Punanai, Sri Lanka

The first month of the autumn, September, is still a hot month in Punanai, Sri Lanka, with an average temperature ranging between max 31.8°C (89.2°F) and min 25.7°C (78.3°F).

Temperature

During September, Punanai records an average high-temperature of a still hot 31.8°C (89.2°F), marking a slight divergence from August's 32.3°C (90.1°F). In the month of September, Punanai experiences an average low-temperature of 25.7°C (78.3°F).

Heat index

September's average heat index is appraised at an extremely hot 41°C (105.8°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Punanai, the average relative humidity in September is 72%.

Rainfall

In Punanai, in September, it is raining for 22 days, with typically 81mm (3.19") of accumulated precipitation. Throughout the year, there are 237.8 rainfall days, and 1259mm (49.57") of precipitation is accumulated.

Daylight

The average length of the day in September in Punanai is 12h and 10min.
On the first day of September, sunrise is at 05:56 and sunset at 18:12. On the last day of the month, sunrise is at 05:52 and sunset at 17:56 +0530.

Sunshine

In September, the average sunshine is 10.7h.

UV index

January through October, with an average maximum UV index of 7, are months with the highest UV index in Punanai. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. 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. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.