September Weather in Attapeu, Laos

Last updated: August 23, 2025

In Attapeu, Laos during September, the average temperature hovers around 26°C (80°F), with a minimum of 22°C (71°F) and a maximum reaching up to 34°C (94°F). Visitors can expect significant precipitation totaling 313 mm (12.3 in) over 26 days, contributing to a high humidity level of 91%. Stay prepared for a tropical atmosphere where warmth meets moisture!

September Temperature in Attapeu

In September in Attapeu, the average temperature is 26°C (80°F). Maximums can reach 34°C (94°F), while minimums can drop to as low as 22°C (71°F). This mild and warm climate makes it an ideal destination for travelers seeking comfortable weather.

September Weather in Attapeu: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Attapeu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Attapeu, September typically has an average temperature of 26°C (80°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (71°F).

Data source: Temperature data for Attapeu generated using information from the Copernicus Climate Change Service.

September Precipitation in Attapeu

In Attapeu in September, the precipitation amount is 313 mm (12.3 in) over the course of 26 days.

September Precipitation Trends in Attapeu

The chart displays monthly precipitation patterns in Attapeu, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Attapeu, September typically receives around 313 mm (12.3 inches) of precipitation spread over approximately 26 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Attapeu

In Attapeu in September, humidity is 91%. With an average temperature of 26°C (80°F), this humidity feels like a thick, heavy blanket wrapping around you, making travel feel sluggish and uncomfortable as you sweat with every step.

September Average Humidity in Attapeu

This chart illustrates the average monthly humidity levels in Attapeu, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Attapeu is approximately 91%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Attapeu

In Attapeu in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Attapeu, you can check here.

Maximum UV Index Levels in Attapeu for September

The chart shows the monthly maximum UV Index (UVI) for Attapeu in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Attapeu typically reaches 14, which falls under the extreme exposure category.

Data source: Attapeu September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Attapeu Compares to Other Months

Weather in Attapeu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Attapeu, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Attapeu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	2 mm (0.1 inches)	74%	very high
February Weather	26°C (79°F)	4 mm (0.1 inches)	65%	extreme
March Weather	29°C (84°F)	25 mm (1.0 inches)	53%	extreme
April Weather	29°C (85°F)	55 mm (2.2 inches)	49%	extreme
May Weather	28°C (83°F)	160 mm (6.3 inches)	72%	extreme
June Weather	27°C (81°F)	244 mm (9.6 inches)	86%	extreme
July Weather	26°C (79°F)	378 mm (14.9 inches)	91%	extreme
August Weather	26°C (79°F)	383 mm (15.1 inches)	93%	extreme
September Weather	26°C (80°F)	313 mm (12.3 inches)	91%	extreme
October Weather	26°C (80°F)	230 mm (9.1 inches)	88%	extreme
November Weather	26°C (79°F)	36 mm (1.4 inches)	85%	extreme
December Weather	25°C (77°F)	11 mm (0.4 inches)	82%	very high