September weather forecast
Ban Mouangkhai, Laos

September in Ban Mouangkhai brings some respite from the most prominent levels of rainfall and humidity. Signs of receding monsoon become evident. Notwithstanding, September still clocks a rainfall of 200mm (7.87"), expectedly lower than August. Heading towards the end of the month, the decrease in rainfall is accompanied by more sunshine hours and thus a start of the transition into the dryer season.

Temperature

September's weather displays an average high-temperature of a still hot 30.9°C (87.6°F), slightly varied from August's 30°C (86°F). Ban Mouangkhai's average low-temperature in the month of September is recorded at a moderately hot 23.1°C (73.6°F).

Heat index

The heat index value for September is computed to be a scorching 41°C (105.8°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in September is 82%.

Rainfall

In September, the rain falls for 23.6 days. Throughout September, 200mm (7.87") of precipitation is accumulated. Throughout the year, there are 187.2 rainfall days, and 1527mm (60.12") of precipitation is accumulated.

Daylight

In Ban Mouangkhai, Laos, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 05:45 and sunset at 18:13. On the last day of the month, sunrise is at 05:49 and sunset at 17:49 +07.

Sunshine

In September, the average sunshine is 8.7h.

UV index

February through June, August and September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.