September weather forecast
Rattota, Sri Lanka

September, the first month of the autumn in Rattota, is still a tropical month, with an average temperature fluctuating between 31.2°C (88.2°F) and 22.3°C (72.1°F).

Temperature

During September, Rattota records an average high-temperature of a still hot 31.2°C (88.2°F), marking a slight divergence from August's 30.8°C (87.4°F). Rattota's average low-temperature during September nights is observed to be an agreeable 22.3°C (72.1°F).

Heat index

The heat index for September is computed to be a fiery hot 39°C (102.2°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

March and September, with an average relative humidity of 72%, are the least humid months in Rattota.

Rainfall

In Rattota, during September, the rain falls for 15.2 days and regularly aggregates up to 72mm (2.83") of precipitation. In Rattota, during the entire year, the rain falls for 217.7 days and collects up to 1165mm (45.87") of precipitation.

Daylight

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, sunrise is at 05:55 and sunset at 17:59 +0530.

Sunshine

The average sunshine in September in Rattota, Sri Lanka, is 10.5h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 7 during September leads to these advisories:
Resist overexposure. Safeguarding from solar damage is indispensable. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.