September weather forecast
Phương Hạnh, Vietnam

September, the first month of the autumn in Phương Hạnh, is also a hot month, with an average temperature fluctuating between 31.7°C (89.1°F) and 24.2°C (75.6°F).

Temperature

The arrival of September denotes a barely perceptible change in the average high-temperatures to a still tropical 31.7°C (89.1°F) from August's 33.1°C (91.6°F). Throughout the nights in September, an average low-temperature of 24.2°C (75.6°F) is noted.

Heat index

The average heat index in September is calculated to be a scorching 43°C (109.4°F). On guard: Heat exhaustion and heat cramps are predicted. Heatstroke is a potential hazard with continuous physical effort.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The months with the highest humidity are August and September, with an average relative humidity of 80%.

Rainfall

In Phương Hạnh, Vietnam, during September, the rain falls for 18.5 days and regularly aggregates up to 73mm (2.87") of precipitation. Throughout the year, there are 181.2 rainfall days, and 595mm (23.43") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 16min.
On the first day of September, sunrise is at 05:41 and sunset at 18:13. On the last day of the month, sunrise is at 05:48 and sunset at 17:46 +07.

Sunshine

The average sunshine in September is 8.5h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Phương Hạnh. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.