September weather forecast
Jalthara, Sri Lanka

September, the first month of the autumn in Jalthara, is still a warm month, with temperature in the range of an average high of 29.1°C (84.4°F) and an average low of 24.9°C (76.8°F).

Temperature

As Jalthara transitions into September, the average high-temperature stands at a still warm 29.1°C (84.4°F), offering little variation from the preceding month. Jalthara documents a consistent average low-temperature of 24.9°C (76.8°F) at night during September.

Heat index

September's average heat index is estimated at a very hot 35°C (95°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for 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.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In September, the average relative humidity is 81%.

Rainfall

In Jalthara, in September, it is raining for 26.9 days, with typically 206mm (8.11") of accumulated precipitation. In Jalthara, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

Daylight

In September, the average length of the day in Jalthara is 12h and 10min.
On the first day of September in Jalthara, Sri Lanka, sunrise is at 06:02 and sunset at 18:17. On the last day of the month, sunrise is at 05:57 and sunset at 18:01 +0530.

Sunshine

In Jalthara, 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 value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.