September weather forecast
Habarana, Sri Lanka

The first month of the autumn, September, is still a hot month in Habarana, Sri Lanka, with an average temperature fluctuating between 24.1°C (75.4°F) and 33.9°C (93°F).

Temperature

The arrival of September denotes a barely perceptible change in the average high-temperatures to a still hot 33.9°C (93°F) from August's 33.7°C (92.7°F). Nightly temperatures in Habarana drop to an average low of 24.1°C (75.4°F) in September.

Heat index

September's average heat index is appraised at a life-threatening hot 45°C (113°F). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

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

Rainfall

In Habarana, in September, it is raining for 13.5 days, with typically 53mm (2.09") of accumulated precipitation. In Habarana, during the entire year, the rain falls for 196.8 days and collects up to 943mm (37.13") of precipitation.

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of the month, sunrise is at 05:58 and sunset at 18:14. On the last day of September, in Habarana, sunrise is at 05:55 and sunset at 17:58 +0530.

Sunshine

In Habarana, the average sunshine in September is 10.9h.

UV index

February through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.