September weather forecast
Phi Mô, Vietnam

The first month of the autumn, September, is still a tropical month in Phi Mô, Vietnam, with an average temperature ranging between max 31.5°C (88.7°F) and min 23.8°C (74.8°F).

Temperature

The onset of September notes an average high-temperature of a still hot 31.5°C (88.7°F), subtly shifted from August's 32.6°C (90.7°F). Throughout the month of September, Phi Mô witnesses an average low-temperature of 23.8°C (74.8°F).

Heat index

In September, the heat index is evaluated at a blisteringly hot 42°C (107.6°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Phi Mô, the average relative humidity in September is 79%.

Rainfall

In Phi Mô, in September, it is raining for 14.4 days, with typically 37mm (1.46") of accumulated precipitation. Throughout the year, there are 165.7 rainfall days, and 431mm (16.97") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 05:38 and sunset at 18:11. On the last day of September, sunrise is at 05:45 and sunset at 17:43 +07.

Sunshine

The average sunshine in September is 9.2h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 7 in September transforms into this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.