September weather forecast
Ban Nao Tai, Laos

The first month of the autumn, September, is still a hot month in Ban Nao Tai, Laos, with temperature in the range of an average high of 31.1°C (88°F) and an average low of 23.3°C (73.9°F).

Temperature

The transition from August to September sees average high-temperatures adjusting to a still tropical 31.1°C (88°F), from a not significantly different 30°C (86°F). September's nights observe an average temperature of 23.3°C (73.9°F).

Heat index

September's mean heat index is computed to be an extremely hot 42°C (107.6°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in September is 83%.

Rainfall

In September, the rain falls for 25.2 days. Throughout September, 224mm (8.82") of precipitation is accumulated. In Ban Nao Tai, during the entire year, the rain falls for 193.3 days and collects up to 1502mm (59.13") of precipitation.

Daylight

In September, the average length of the day is 12h and 14min.
On the first day of September, sunrise is at 05:46 and sunset at 18:13. On the last day of the month, sunrise is at 05:50 and sunset at 17:50 +07.

Sunshine

In September, the average sunshine is 7.9h.

UV index

The months with the highest UV index are February through June and September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 7 during September translates into these guidelines:
Shun overexposure. Protection from sun ravages is indispensable. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.