September weather forecast
Polgahawela, Sri Lanka

The first month of the autumn, September, is also a moderately hot month in Polgahawela, Sri Lanka, with an average temperature varying between 29.5°C (85.1°F) and 21.1°C (70°F).

Temperature

Polgahawela marks the arrival of September with an average high-temperature of a still moderately hot 29.5°C (85.1°F), hardly different from August's 29.2°C (84.6°F). Throughout September, Polgahawela encounters an average temperature drop to a pleasant 21.1°C (70°F).

Heat index

Throughout September, the heat index is estimated at a fiery hot 35°C (95°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Polgahawela, in September, it is raining for 23.4 days, with typically 118mm (4.65") of accumulated precipitation. Throughout the year, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of the month, sunrise is at 06:01 and sunset at 18:16. On the last day of September, sunrise is at 05:56 and sunset at 18:00 +0530.

Sunshine

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

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during September translates into these guidelines:
Guard against overexposure. Protection from sun-induced harm is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.