September weather forecastBan Nakhem, Laos

Weather in September

September begins the slow transition out of the rainy season in Ban Nakhem. The rainfall starts to recede, falling to 144mm (5.67"), paving the way for drier months to come. A significant decrease in cloud coverage to 54% promises more sunny days. Winds follow a decreasing trend as well, with speeds dropping to 2.9km/h (1.8mph). As the daylight hours increase, locals begin to engage more in outdoor activities.

Temperature

The beginning of September records an average high-temperature of a still moderately hot 29.5°C (85.1°F), marking a negligible difference from August's 28.4°C (83.1°F). Throughout the nights in September, an average low-temperature of 19.4°C (66.9°F) is noted.

Heat index

Throughout September, the heat index is computed to be a very hot 37°C (98.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The average relative humidity in September is 84%.

Rainfall

In September, the rain falls for 27.9 days. Throughout September, 144mm (5.67") of precipitation is accumulated. In Ban Nakhem, during the entire year, the rain falls for 227.1 days and collects up to 1191mm (46.89") of precipitation.

Daylight

In Ban Nakhem, the average length of the day in September is 12h and 15min.
On the first day of the month, sunrise is at 05:59 and sunset at 18:28. On the last day of September, in Ban Nakhem, sunrise is at 06:04 and sunset at 18:03 +07.

Sunshine

In Ban Nakhem, the average sunshine in September is 7.9h.

UV index

February through July, September through November, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In September, a daily UV index of 6 turns into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.