September weather forecast
Pakse, Laos

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Weather in September

September brings a marked change in Pakse, Laos's weather conditions with a dramatic decrease in rainfall to 298mm (11.73"). This decrease in rainfall indicates the retreat of the monsoon season. Despite the subsiding rainfall, humidity manages to stay at a high level. The fall in rainfall coincides with diminishing daylight, signaling shorter days. Nevertheless, the UV index remains high, with a slight shift towards the lower spectrum.

Temperature

The transition from August to September brings an average high-temperature of a still tropical 30.3°C (86.5°F), barely different from August's 30.1°C (86.2°F). An average nighttime temperature of 23.7°C (74.7°F) is witnessed throughout September.

Heat index

For most parts of September, the heat index is appraised at a blisteringly hot 40°C (104°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to 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 in Pakse is 84%.

Rainfall

In Pakse, Laos, during September, the rain falls for 13 days and regularly aggregates up to 298mm (11.73") of precipitation. Throughout the year, in Pakse, there are 128 rainfall days, and 2075mm (81.69") of precipitation is accumulated.

Daylight

In Pakse, the average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 05:44 and sunset at 18:09. On the last day of September, sunrise is at 05:46 and sunset at 17:46 +07.

Sunshine

In September, the average sunshine is 5.4h.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 12 in September transforms into the following instructions:
Employ all critical precautions. Guarding against sun damage is essential. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Applying and reapplying liberally a broad-spectrum sunscreen of SPF 30+ every two hours, and straight after a swim or outdoor activity is recommended.

Frequently asked questions

How hot is September?

The average high-temperature, in September, in Pakse, is 30.3°C (86.5°F), while the average low-temperature is 23.7°C (74.7°F). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 40°C (104°F).

What is the average humidity in September?

The average relative humidity in September is 84%.

How much does it rain in September?

In Pakse, in September, during 13 rainfall days, 298mm (11.73") of precipitation is typically accumulated.

What is the average length of the day in September?

In September, the average day length is 12h and 13min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 05:44 and sunset at 18:09. On the last day of the month, sunrise is at 05:46 and sunset at 17:46 +07.

How many hours of sunshine does Pakse have in September?

In Pakse, the average sunshine duration in September is 5.4h.

What are the months with the highest UV index?

The months with the highest UV index are February through September, with an average maximum UV index of 12.

What is the UV index reading in September?

In Pakse, the average daily maximum UV index in September is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Pakse, Laos

Average temperature in September - Pakse, Laos
  • Average high temperature in September: 30.3°C

The warmest month (with the highest average high temperature) is April (34.8°C).
The month with the lowest average high temperature is August (30.1°C).

  • Average low temperature in September: 23.7°C

The months with the highest average low temperature are April and May (24.9°C).
The coldest month (with the lowest average low temperature) is January (16.3°C).

Average humidity in September
Pakse, Laos

Average humidity in September - Pakse, Laos
  • Average humidity in September: 84%

The month with the highest relative humidity is August (85%).
The month with the lowest relative humidity is March (59%).

Average rainfall in September
Pakse, Laos

Average rainfall in September - Pakse, Laos
  • Average rainfall in September: 297.5mm

The wettest month (with the highest rainfall) is August (523.9mm).
The driest month (with the least rainfall) is January (2mm).

Average rainfall days in September
Pakse, Laos

Average rainfall days in September - Pakse, Laos
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is August (25 days).
The months with the least rainy days are January and December (0 days).

Average daylight in September /
Average sunshine in September
Pakse, Laos

Average daylight in September / Average sunshine in September - Pakse, Laos
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in September: 5h and 2min

The month with the most sunshine is March (Average sunshine: 9h and 12min).
The month with the least sunshine is August (Average sunshine: 4h and 0min).

Average UV index in September
Pakse, Laos

Average UV index in September - Pakse, Laos
  • Average UV index in September: 12

The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The months with the lowest UV index are November and December (UV index 9).

Pakse, Laos

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