September weather forecast
Mường Phăng, Vietnam

The first month of the autumn, September, is also a moderately hot month in Mường Phăng, Vietnam, with temperature in the range of an average high of 28.9°C (84°F) and an average low of 18.4°C (65.1°F).

Temperature

The commencement of September brings an average high-temperature of a still moderately hot 28.9°C (84°F), marking an inconsequential divergence from August. In Mường Phăng, September nights witness a steady temperature drop to a refreshing 18.4°C (65.1°F).

Heat index

The heat index value for September is evaluated at a fiery hot 35°C (95°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to 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.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

The average relative humidity in September is 83%.

Rainfall

In Mường Phăng, during September, the rain falls for 22.9 days and regularly aggregates up to 140mm (5.51") of precipitation. In Mường Phăng, during the entire year, the rain falls for 212.5 days and collects up to 1386mm (54.57") of precipitation.

Daylight

In Mường Phăng, the average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 05:50 and sunset at 18:23. On the last day of September, in Mường Phăng, sunrise is at 05:58 and sunset at 17:56 +07.

Sunshine

In Mường Phăng, Vietnam, the average sunshine in September is 8.5h.

UV index

February through April and September, with an average maximum UV index of 6, are months with the highest UV index in Mường Phăng. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 6 in September translates into this advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.