September weather forecast
Batticaloa, Sri Lanka

September in Batticaloa welcomes an increase in rainfall to 81mm (3.19") from the preceding month's volume. Higher humidity provides just enough moisture for lush landscapes to thrive without becoming uncomfortably sticky. Despite the rise in rainfall, daily sunshine isn't significantly affected which is similar to August. The amount of cloud cover increases slightly, ensuring plenty of photo-worthy sky views. Wind speeds drop off during this month, helping to maintain warm temperatures.

Temperature

September's arrival shows an average high-temperature of a still tropical 31.8°C (89.2°F), hardly different from the previous month. Batticaloa, in September, witnesses an average low-temperature of 25.7°C (78.3°F).

Heat index

The heat index value for September is estimated at an extremely hot 41°C (105.8°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
In reference to the heat index, it's for places in shade and with a slight wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In September, the average relative humidity in Batticaloa is 72%.

Rainfall

In Batticaloa, in September, during 22 rainfall days, 81mm (3.19") of precipitation is typically accumulated. Throughout the year, there are 237.8 rainfall days, and 1259mm (49.57") of precipitation is accumulated.

Daylight

In Batticaloa, the average length of the day in September is 12h and 10min.
On the first day of September, sunrise is at 05:55 and sunset at 18:11. On the last day of the month, sunrise is at 05:51 and sunset at 17:54 +0530.

Sunshine

The average sunshine in September is 10.7h.

UV index

The months with the highest UV index are January through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The UV index of 7 during September translates into the following guidance:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.