September weather forecast
Dieu Viên, Vietnam

September, the first month of the autumn in Dieu Viên, is still a tropical month, with an average temperature varying between 30.2°C (86.4°F) and 25°C (77°F).

Temperature

The transition into September shows a subtle variation to a still tropical 30.2°C (86.4°F) from August's 31.4°C (88.5°F) in the average high-temperature. In the month of September, Dieu Viên witnesses a consistent average low-temperature of 25°C (77°F).

Heat index

The heat index for September is appraised at a sweltering 38°C (100.4°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. 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 highly critical for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In September, the average relative humidity is 80%.

Rainfall

In September, the rain falls for 24.8 days. Throughout September, 134mm (5.28") of precipitation is accumulated. In Dieu Viên, during the entire year, the rain falls for 260 days and collects up to 1343mm (52.87") of precipitation.

Daylight

In Dieu Viên, the average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 05:32 and sunset at 17:54. On the last day of September, sunrise is at 05:32 and sunset at 17:34 +07.

Sunshine

In September, the average sunshine is 8.6h.

UV index

The months with the highest UV index in Dieu Viên are March through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 7 in September leads to these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.