September weather forecast
Walala, Sri Lanka

September, the first month of the autumn in Walala, is still a warm month, with an average temperature ranging between min 21.1°C (70°F) and max 29.5°C (85.1°F).

Temperature

The transition from August to September sees an average high-temperature of a still moderately hot 29.5°C (85.1°F), indicating a minor variance from the prior month. During September, the average low-temperature is an agreeable 21.1°C (70°F).

Heat index

In September, the heat index is appraised at a sweltering 35°C (95°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in September in Walala, Sri Lanka, is 77%.

Rainfall

In Walala, in September, it is raining for 23.4 days, with typically 118mm (4.65") of accumulated precipitation. In Walala, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.

Daylight

In Walala, the average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 05:59 and sunset at 18:14. On the last day of September, in Walala, sunrise is at 05:55 and sunset at 17:58 +0530.

Sunshine

In Walala, the average sunshine in September is 10.3h.

UV index

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during September leads to these advisories:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.