September marks the receding phase of the monsoon season in
Luang Prabang. Rainfall volume shrinks to 173mm (6.81"), easing-off the city from the heavy wet conditions prevalent during the preceding months. The humidity level drops slightly but the city continues to be enveloped in a moisture-laden ambiance. A slight rise in temperature and extended sunshine hours hint at late summer-like conditions. Nature lovers can relish the verdant landscape adorned with a refreshed look after the intense rain of the previous months.
Temperature
Upon the onset of September, Luang Prabang witnesses an average high-temperature of a still hot 31.9°C (89.4°F), showing a close resemblance to the prior month. During September, the nighttime temperature in Luang Prabang averages of 22.9°C (73.2°F).
Heat index
In September, the average heat index is computed to be a blazing hot 47°C (116.6°F).
Note: Heat exhaustion and heat cramps are probable. Heatstroke can follow with prolonged activity.
Records show heat index calculations are tailored for shaded regions and mild winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
In Luang Prabang, the average relative humidity in September is 87%.
Rainfall
In Luang Prabang, during September, the rain falls for 12 days and regularly aggregates up to 173mm (6.81") of precipitation. In Luang Prabang,
Laos, during the entire year, the rain falls for 99 days and collects up to 1443mm (56.81") of precipitation.
Daylight
In Luang Prabang, the average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 05:55 and sunset at 18:26. On the last day of September, in Luang Prabang, sunrise is at 06:02 and sunset at 18:00 +07.
Sunshine
In Luang Prabang, the average sunshine in September is 6h.
UV index
The months with the highest UV index in Luang Prabang are
March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 12 in September interprets into the following recommendations:
Adopt all important safety measures, unprotected skin may burn rapidly. 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. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Regardless of cloud cover, it's recommended to apply generously and reapply often a sunscreen with an SPF of at least 30, especially after swimming or any outdoor activity.