September weather forecast
Andagala, Sri Lanka

The first month of the autumn, September, is still a hot month in Andagala, Sri Lanka, with an average temperature ranging between max 33.8°C (92.8°F) and min 24.1°C (75.4°F).

Temperature

Andagala marks the onset of September with an average high-temperature of a still tropical 33.8°C (92.8°F), subtly divergent from August's 33.7°C (92.7°F). In the month of September, the nighttime temperature in Andagala, Sri Lanka, dips to a steady average of 24.1°C (75.4°F).

Heat index

September's mean heat index is estimated at a life-threatening hot 45°C (113°F). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. 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 are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The months with the lowest humidity in Andagala are June through September, with an average relative humidity of 67%.

Rainfall

In Andagala, in September, during 13.7 rainfall days, 60mm (2.36") of precipitation is typically accumulated. In Andagala, during the entire year, the rain falls for 197 days and collects up to 950mm (37.4") of precipitation.

Daylight

In Andagala, the average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 06:00 and sunset at 18:16. On the last day of September, in Andagala, sunrise is at 05:56 and sunset at 18:00 +0530.

Sunshine

The average sunshine in September is 10.7h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.