September weather forecast
Phục Thiện, Vietnam

September, the first month of the autumn in Phục Thiện, is also a hot month, with temperature in the range of an average low of 23.8°C (74.8°F) and an average high of 31.5°C (88.7°F).

Temperature

The shift to September signals an average high-temperature of a still hot 31.5°C (88.7°F), subtly varied from August's 32.6°C (90.7°F). The temperature dips to an average of 23.8°C (74.8°F) during September nights.

Heat index

September's average heat index is estimated at a blistering 42°C (107.6°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Note that heat index values are valued for light wind and location in the shade. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. 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

In September, the average relative humidity in Phục Thiện is 79%.

Rainfall

In September, the rain falls for 14.4 days. Throughout September, 37mm (1.46") of precipitation is accumulated. Throughout the year, there are 165.7 rainfall days, and 431mm (16.97") of precipitation is accumulated.

Daylight

In Phục Thiện, the average length of the day in September is 12h and 16min.
On the first day of September, sunrise is at 05:37 and sunset at 18:10. On the last day of the month, sunrise is at 05:45 and sunset at 17:43 +07.

Sunshine

The average sunshine in September in Phục Thiện is 9.2h.

UV index

May through September, 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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.