September weather forecast
Phố Mới, Vietnam

September, the first month of the autumn in Phố Mới, is still a tropical month, with an average temperature ranging between min 18.7°C (65.7°F) and max 30°C (86°F).

Temperature

Upon the beginning of September, Phố Mới's high-temperatures register at a still tropical 30°C (86°F), closely mirroring the preceding month. An average temperature of 18.7°C (65.7°F) marks the nights in September.

Heat index

The average heat index in September is appraised at a fiery hot 37°C (98.6°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Phố Mới, during September, the rain falls for 20.4 days and regularly aggregates up to 69mm (2.72") of precipitation. Throughout the year, there are 188.3 rainfall days, and 770mm (30.31") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 17min.
On the first day of September, sunrise is at 05:46 and sunset at 18:21. On the last day of the month, sunrise is at 05:55 and sunset at 17:52 +07.

Sunshine

The average sunshine in September is 10.2h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 6 during September translates into the following directions:
Fend off overexposure. Sun protection is vital. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.