September weather forecast
Bobella, Sri Lanka

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

Temperature

Shifting into September, Bobella records an average high-temperature of a still hot 33.9°C (93°F), presenting minor fluctuations compared to the previous month. Bobella's September nights cool down to an average low-temperature of 24.1°C (75.4°F).

Heat index

For September, the heat index is estimated at a blazing hot 45°C (113°F). Stay watchful: Heat exhaustion along with heat cramps are likely. Ongoing effort may cause heatstroke.
Consider that heat index readings are for situations in the shade and light wind. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

June through September, with an average relative humidity of 67%, are the least humid months.

Rainfall

In Bobella, during September, the rain falls for 13.5 days and regularly aggregates up to 53mm (2.09") of precipitation. Throughout the year, in Bobella, there are 196.8 rainfall days, and 943mm (37.13") of precipitation is accumulated.

Daylight

In Bobella, 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 18:15. On the last day of September, in Bobella, sunrise is at 05:55 and sunset at 17:59 +0530.

Sunshine

The average sunshine in September in Bobella 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 value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.