September weather forecast
Veeramunai, Sri Lanka

The first month of the autumn, September, is also a hot month in Veeramunai, Sri Lanka, with an average temperature fluctuating between 25.7°C (78.3°F) and 31.8°C (89.2°F).

Temperature

Veeramunai notes an average high-temperature of a still tropical 31.8°C (89.2°F) in September, hardly diverging from August. Veeramunai observes an average nighttime temperature of 25.7°C (78.3°F) during September.

Heat index

In September, the heat index is computed to be an extremely hot 41°C (105.8°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

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

Rainfall

In September, the rain falls for 22 days. Throughout September, 81mm (3.19") of precipitation is accumulated. In Veeramunai, during the entire year, the rain falls for 237.8 days and collects up to 1259mm (49.57") of precipitation.

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of September in Veeramunai, sunrise is at 05:55 and sunset at 18:10. On the last day of the month, sunrise is at 05:51 and sunset at 17:54 +0530.

Sunshine

In Veeramunai, the average sunshine in September is 10.7h.

UV index

The months with the highest UV index are January through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In September, an average UV index of 7 transforms into the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.