September Weather in Sekong, Laos

Last updated: August 23, 2025

In Sekong, Laos, the average temperature in September hovers around 25°C (77°F). You'll experience a pleasant range, with minimum temperatures dipping to 19°C (67°F) and maximums reaching 32°C (89°F). However, be prepared for significant precipitation, with an average of 387 mm (15.2 in) spread over 28 days. The air tends to be quite humid, with an average humidity level of 91%, making it feel even warmer!

September Temperature in Sekong

In September in Sekong, the average temperature is 25°C (77°F). Maximums can reach 32°C (89°F), and minimums can be as low as 19°C (67°F). It's a great time for travelers to enjoy warm weather while exploring the beautiful surroundings.

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

The chart illustrates September temperature patterns in Sekong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sekong, September typically has an average temperature of 25°C (77°F), with highs reaching up to 32°C (89°F) and lows dropping to around 19°C (67°F).

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

September Precipitation in Sekong

In Sekong in September, the precipitation amount is 387 mm (15.2 in) over the course of 28 days.

September Precipitation Trends in Sekong

The chart displays monthly precipitation patterns in Sekong, 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 Sekong, September typically receives around 387 mm (15.2 inches) of precipitation spread over approximately 28 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 Sekong

In Sekong in September humidity is 91%. With an average temperature of 25°C (77°F), this humidity feels like a heavy blanket enveloping your skin, making every step feel laborious and the air thick and sticky, which can make traveling quite uncomfortable.

September Average Humidity in Sekong

This chart illustrates the average monthly humidity levels in Sekong, 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 Sekong 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 Sekong

In Sekong 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 Sekong, you can check here.

Maximum UV Index Levels in Sekong for September

The chart shows the monthly maximum UV Index (UVI) for Sekong 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 Sekong typically reaches 14, which falls under the extreme exposure category.

Data source: Sekong 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 Sekong Compares to Other Months

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

This table compares monthly weather conditions in Sekong, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (73°F)	8 mm (0.3 inches)	74%	extreme
February Weather	23°C (75°F)	13 mm (0.5 inches)	65%	extreme
March Weather	26°C (79°F)	64 mm (2.5 inches)	53%	extreme
April Weather	26°C (79°F)	139 mm (5.5 inches)	49%	extreme
May Weather	26°C (79°F)	242 mm (9.5 inches)	72%	extreme
June Weather	26°C (78°F)	256 mm (10.1 inches)	86%	extreme
July Weather	25°C (77°F)	381 mm (15.0 inches)	91%	extreme
August Weather	25°C (77°F)	384 mm (15.1 inches)	93%	extreme
September Weather	25°C (77°F)	387 mm (15.2 inches)	91%	extreme
October Weather	24°C (76°F)	264 mm (10.4 inches)	88%	extreme
November Weather	24°C (75°F)	76 mm (3.0 inches)	85%	extreme
December Weather	22°C (72°F)	15 mm (0.6 inches)	82%	very high