September weather forecast
Giá Rai, Vietnam

The first month of the autumn, September, is still a tropical month in Giá Rai, Vietnam, with temperature in the range of an average low of 25.9°C (78.6°F) and an average high of 30.8°C (87.4°F).

Temperature

With the arrival of September, Giá Rai's average high-temperature registers at a still tropical 30.8°C (87.4°F), indicating a subtle variation from the previous month. September notes an average low temperature of 25.9°C (78.6°F) in Giá Rai, subtly down from the daytime highs.

Heat index

The heat index in September is appraised at a torrid 39°C (102.2°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Giá Rai, in September, it is raining for 20.9 days, with typically 89mm (3.5") of accumulated precipitation. In Giá Rai, during the entire year, the rain falls for 238.6 days and collects up to 889mm (35") of precipitation.

Daylight

In Giá Rai, Vietnam, the average length of the day in September is 12h and 11min.
On the first day of September, sunrise is at 05:49 and sunset at 18:06. On the last day of the month, sunrise is at 05:46 and sunset at 17:49 +07.

Sunshine

In September, the average sunshine is 8.3h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A daily high UV index of 7 in September leads to these guidelines:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.