September Weather in Salavan, Laos

Last updated: August 23, 2025

In Salavan, Laos, the average temperature in September is a warm 26°C (79°F), with minimums dipping to 20°C (69°F) and maximums rising to 33°C (92°F). Be prepared for humid conditions, as humidity levels average around 91%. Rainfall can be significant, with 348 mm (13.7 in) expected over 25 days. Whether you're enjoying the heat or dodging the rain, it's a month to remember!

September Temperature in Salavan

In September in Salavan, the average temperature is 26°C (79°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as 20°C (69°F). This climate makes Salavan an ideal destination for travelers seeking warm and comfortable weather.

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

The chart illustrates September temperature patterns in Salavan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Salavan, September typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (92°F) and lows dropping to around 20°C (69°F).

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

September Precipitation in Salavan

In Salavan in September, the total precipitation amount is 348 mm (13.7 in) distributed over 25 days.

September Precipitation Trends in Salavan

The chart displays monthly precipitation patterns in Salavan, 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 Salavan, September typically receives around 348 mm (13.7 inches) of precipitation spread over approximately 25 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 Salavan

In Salavan in September, humidity is 91%. With an average temperature of 26°C (79°F), this humidity feels like navigating through an invisible blanket, making even short strolls feel laborious and leaving a sticky sheen on your skin, which can be overwhelming for travelers.

September Average Humidity in Salavan

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

In Salavan 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 Salavan, you can check here.

Maximum UV Index Levels in Salavan for September

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

Data source: Salavan 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 Salavan Compares to Other Months

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

This table compares monthly weather conditions in Salavan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	4 mm (0.2 inches)	74%	very high
February Weather	25°C (77°F)	6 mm (0.2 inches)	65%	extreme
March Weather	28°C (82°F)	27 mm (1.1 inches)	53%	extreme
April Weather	28°C (82°F)	63 mm (2.5 inches)	49%	extreme
May Weather	28°C (82°F)	119 mm (4.7 inches)	72%	extreme
June Weather	27°C (81°F)	191 mm (7.5 inches)	86%	extreme
July Weather	26°C (79°F)	387 mm (15.3 inches)	91%	extreme
August Weather	26°C (79°F)	345 mm (13.6 inches)	93%	extreme
September Weather	26°C (79°F)	348 mm (13.7 inches)	91%	extreme
October Weather	26°C (79°F)	176 mm (6.9 inches)	88%	extreme
November Weather	25°C (77°F)	65 mm (2.5 inches)	85%	very high
December Weather	23°C (73°F)	8 mm (0.3 inches)	82%	very high