September weather forecast
Ban Boungmai, Laos

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Weather in September

September sees the nature dialing down on the heavy rainfall as the end of wet season approaches. Sunshine begins to claim more hours from the day, despite cloud cover staying substantial. Temperatures and humidity levels showcase a very gentle downward trend, embarking on the journey to a cooler atmosphere. September exhibits a balanced blend of wet and warm weather, marking the shift in seasons. As the winds remain mild, September is a transition month with a reduction in rainfall.

Temperature

Ban Boungmai records a slight change with September's average high-temperatures adjusting to a still warm 29.6°C (85.3°F) from August's 29.2°C (84.6°F). In Ban Boungmai, September nights cool down to an average of 22.4°C (72.3°F).

Heat index

September's mean heat index is evaluated at a fiery hot 38°C (100.4°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In September, the average relative humidity in Ban Boungmai is 87%.

Rainfall

In Ban Boungmai, during September, the rain falls for 29.4 days and regularly aggregates up to 360mm (14.17") of precipitation. In Ban Boungmai, during the entire year, the rain falls for 237.9 days and collects up to 1976mm (77.8") of precipitation.

Daylight

The average length of the day in September in Ban Boungmai 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 17:47 +07.

Sunshine

In September, the average sunshine is 7.4h.

UV index

January, June through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In September, a regular UV index of 6 translates into these guidelines:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

How hot is September in Ban Boungmai?

In Ban Boungmai, in September, the average high-temperature is 29.6°C (85.3°F), and the average low-temperature is 22.4°C (72.3°F). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 38°C (100.4°F).

What is the average humidity in September in Ban Boungmai?

The average relative humidity in September in Ban Boungmai, Laos, is 87%.

How much does it rain in Ban Boungmai in September?

In Ban Boungmai, Laos, in September, during 29.4 rainfall days, 360mm (14.17") of precipitation is typically accumulated.

How many hours of daylight does Ban Boungmai have in September?

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

When is the sunrise / sunset in September in Ban Boungmai?

On the first day of September in Ban Boungmai, 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 17:47 +07.

How long on average sun shines in September in Ban Boungmai?

The average sunshine duration in September in Ban Boungmai is 7.4h.

What are the months with the lowest UV index in Ban Boungmai?

January, June through December, with an average maximum UV index of 6, are months with the lowest UV index.

How high is the UV index in September in Ban Boungmai?

In September, the average daily maximum UV index in Ban Boungmai is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Ban Boungmai, Laos

Average temperature in September - Ban Boungmai, Laos
  • Average high temperature in September: 29.6°C

The warmest month (with the highest average high temperature) is March (35.8°C).
The month with the lowest average high temperature is July (28.9°C).

  • Average low temperature in September: 22.4°C

The month with the highest average low temperature is April (24.3°C).
The coldest month (with the lowest average low temperature) is January (18.3°C).

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Average pressure in September
Ban Boungmai, Laos

Average pressure in September - Ban Boungmai, Laos
  • Average pressure in September: 1008.3mbar

The month with the highest atmospheric pressure is January (1013.6mbar).
The month with the lowest atmospheric pressure is July (1007.2mbar).

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Average wind speed in September
Ban Boungmai, Laos

Average wind speed in September - Ban Boungmai, Laos
  • Average wind speed in September: 4.6km/h

The windiest month (with the highest average wind speed) is March (6km/h).
The calmest month (with the lowest average wind speed) is October (4.4km/h).

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Average humidity in September
Ban Boungmai, Laos

Average humidity in September - Ban Boungmai, Laos
  • Average humidity in September: 87%

The month with the highest relative humidity is August (89%).
The month with the lowest relative humidity is March (54%).

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Average rainfall in September
Ban Boungmai, Laos

Average rainfall in September - Ban Boungmai, Laos
  • Average rainfall in September: 360mm

The wettest month (with the highest rainfall) is August (425mm).
The driest month (with the least rainfall) is February (5mm).

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Average rainfall days in September
Ban Boungmai, Laos

Average rainfall days in September - Ban Boungmai, Laos
  • Average rainfall days in September: 29.4 days

The month with the highest number of rainy days is August (30.8 days).
The month with the least rainy days is February (3.8 days).

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Average daylight in September /
Average sunshine in September
Ban Boungmai, Laos

Average daylight in September / Average sunshine in September - Ban Boungmai, 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: 7h and 2min

The month with the most sunshine is April (Average sunshine: 11h and 0min).
The month with the least sunshine is July (Average sunshine: 7h and 6min).

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Average sunshine days in September
Ban Boungmai, Laos

Average sunshine days in September - Ban Boungmai, Laos
  • Average sunshine days in September: 0.5 days

The month with the most sunshine days is January (25.8 days).
The month with the least sunshine days is August (0.1 days).

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Average UV index in September
Ban Boungmai, Laos

Average UV index in September - Ban Boungmai, Laos
  • Average UV index in September: 6

The months with the highest UV index are February, March, April and May (UV index 7).
The months with the lowest UV index are January, June, July, August, September, October, November and December (UV index 6).

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Average cloud cover in September
Ban Boungmai, Laos

Average cloud cover in September - Ban Boungmai, Laos
  • Average cloud cover in September: 53

The month with the most cloud cover is July (Cloud cover 61).
The month with the least cloud cover is February (Cloud cover 16).

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Average visibility in September
Ban Boungmai, Laos

Average visibility in September - Ban Boungmai, Laos
  • Average visibility in September: 7km

The months with the highest visibility are January, February, March, November and December (10km).
The months with the lowest visibility are July, August and September (7km).

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Ban Boungmai, Laos

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