September weather forecast
Peliyagoda, Sri Lanka

The first month of the autumn, September, is still a warm month in Peliyagoda, Sri Lanka, with an average temperature fluctuating between 29.1°C (84.4°F) and 24.9°C (76.8°F).

Temperature

September's advent presents an average high-temperature of a still moderately hot 29.1°C (84.4°F), indicating a slight variation from the conditions of the previous month. Peliyagoda's nighttime temperature in September shows a minor descent, with a steady average of 24.9°C (76.8°F).

Heat index

The average heat index in September is estimated at a torrid 35°C (95°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. 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 vital to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in September is 81%.

Rainfall

In September, the rain falls for 26.9 days. Throughout September, 206mm (8.11") of precipitation is accumulated. In Peliyagoda, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

Sea temperature

In September, the average sea temperature in Peliyagoda, Sri Lanka, is 27.8°C (82°F).
Note: Surface water temperatures falling between 25°C (77°F) and 29°C (84.2°F) are regarded as prime and extremely agreeable for enduring periods during any water activity.

Daylight

The average length of the day in September in Peliyagoda is 12h and 10min.
On the first day of the month, sunrise is at 06:02 and sunset at 18:17. On the last day of September, in Peliyagoda, sunrise is at 05:58 and sunset at 18:02 +0530.

Sunshine

In Peliyagoda, the average sunshine in September is 7.4h.

UV index

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 7 suggests this advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Caution! The Sun's UV rays become stronger due to reflections from water and sand.