September weather forecast
Trincomalee, Sri Lanka

September in Trincomalee marks a shift towards the year-end weather patterns. As temperatures remain high, the month experiences a considerable upsurge in rainfall to 53mm (2.09"). September upholds a pleasant maritime climate with a gentle cooling effect brought on by the rainfall. While sea temperatures hold their warmth, the visibility remains optimal for various activities. Despite the rainfall, September's light breeze and warmth make way for a delightful weather blend.

Temperature

Trincomalee records an average high-temperature of a still tropical 33.9°C (93°F) as September arrives, nearly mirroring the previous month's climate. In the month of September, the temperature in Trincomalee generally rests at an average low of 24.1°C (75.4°F).

Heat index

September's mean heat index is estimated at a burning hot 45°C (113°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', determines the feeling of heat when you account for the relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

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

Rainfall

In Trincomalee, Sri Lanka, during September, the rain falls for 13.5 days and regularly aggregates up to 53mm (2.09") of precipitation. In Trincomalee, during the entire year, the rain falls for 196.8 days and collects up to 943mm (37.13") of precipitation.

Sea temperature

In Trincomalee, the average seawater temperature in September is 29.2°C (84.6°F).
Note: Surface water temperatures falling between 25°C (77°F) and 29°C (84.2°F) are regarded as prime and extremely agreeable for enduring periods during any water activity.

Daylight

In Trincomalee, the average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 05:56 and sunset at 18:13. On the last day of September, in Trincomalee, sunrise is at 05:53 and sunset at 17:56 +0530.

Sunshine

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 of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Attention! The combination of sand and water reflections enhances UV ray intensity.