September weather forecast
Anuradhapura, Sri Lanka

September witnesses the tropical climate of Anuradhapura gearing up for the approaching monsoon. Rainfall takes a sizeable leap with the total reaching 57mm (2.24"), presaging the monsoon season. Despite the rains, the city continues to experience sweltering heat laced with soaring digits of humidity. The weather oscillates between periods of heavy rainfall and high humidity interspersed throughout the month. As September fades away, October comes bearing the brunt of the monsoon rains.

Temperature

The beginning of September records an average high-temperature of a still hot 32.6°C (90.7°F), almost echoing the conditions of the previous month. Anuradhapura records an average nighttime low of 24.8°C (76.6°F) in September.

Heat index

For most parts of September, the heat index is evaluated at a blisteringly hot 43°C (109.4°F). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

July through September, with an average relative humidity of 71%, are the least humid months in Anuradhapura.

Rainfall

In September, the rain falls for 14 days. Throughout September, 57mm (2.24") of precipitation is accumulated. In Anuradhapura, during the entire year, the rain falls for 199.1 days and collects up to 893mm (35.16") 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 06:00 and sunset at 18:16. On the last day of September, sunrise is at 05:56 and sunset at 18:00 +0530.

Sunshine

The average sunshine in September is 9.6h.

UV index

February through September, with an average maximum UV index of 7, are months with the highest UV index in Anuradhapura. 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: A daily high UV index of 7 in September leads to these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.