September weather forecast
Muang Saiapoun, Laos

In September, Muang Saiapoun experiences a considerable drop in rainfall from 199mm (7.83") in August to 88mm (3.46"), indicating a gradual escape from the wet season. Sunshine hours, though reduced compared to the start of the year, remain fairly consistent, thus maintaining warmer temperatures. With the reduction in rainfall, the city's atmospheric pressure also sees an increase, rising to an average value of 1008.2mb. Despite decreased rainfall, humidity levels remain substantially high. Coupled with a consistent average temperature of 30.7°C (87.3°F), the sensation of heat remains relatively high throughout the month.

Temperature

Muang Saiapoun experiences an average high-temperature of a hot 30.7°C (87.3°F) in September, subtly different from August's 29.8°C (85.6°F). September brings with it a nighttime average temperature of 20.8°C (69.4°F).

Heat index

The heat index value during September is computed to be an extremely hot 41°C (105.8°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Muang Saiapoun, the average relative humidity in September is 84%.

Rainfall

In Muang Saiapoun, Laos, in September, during 22.8 rainfall days, 88mm (3.46") of precipitation is typically accumulated. In Muang Saiapoun, Laos, during the entire year, the rain falls for 183.9 days and collects up to 818mm (32.2") of precipitation.

Daylight

In September, the average length of the day is 12h and 14min.
On the first day of the month, sunrise is at 05:59 and sunset at 18:28. On the last day of September, sunrise is at 06:04 and sunset at 18:03 +07.

Sunshine

In Muang Saiapoun, the average sunshine in September is 7.4h.

UV index

The months with the highest UV index are February through May and September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Shun overexposure. Protection from sun ravages is indispensable. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.