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September Weather in Savannakhet, Laos

Last updated: August 23, 2025

In September, the average temperature in Savannakhet, Laos hovers around 28°C (82°F). Expect a minimum of 23°C (73°F) and a maximum of 34°C (94°F), making it a warm month overall. However, with an average humidity of 86%, the air can feel quite heavy. Additionally, precipitation is notable, with about 271 mm (10.7 in) falling over 24 days. Be prepared for a mix of warm temperatures and rain!

September Temperature in Savannakhet

In September in Savannakhet, the average temperature is 28°C (82°F), with maximums reaching 34°C (94°F) and minimums dropping to 23°C (73°F). This warm climate makes it an ideal destination for travelers seeking sunny and pleasant weather during this time of year.

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

The chart illustrates September temperature patterns in Savannakhet, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Savannakhet, September typically has an average temperature of 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 23°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec747682838484828282807773
Data source: Temperature data for Savannakhet generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Savannakhet

In Savannakhet in September, the precipitation amount is 271 mm (10.7 in) over a period of 24 days.

September Precipitation Trends in Savannakhet

The chart displays monthly precipitation patterns in Savannakhet, 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 Savannakhet, September typically receives around 271 mm (10.7 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec2123865168180379309271168305
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Savannakhet

In Savannakhet in September, humidity is 86%. With an average temperature of 28°C (82°F), this humidity feels like a warm blanket wrapped around you, making travel quite challenging as you navigate the thick, moisture-laden air that can leave you feeling sticky and fatigued.

September Average Humidity in Savannakhet

This chart illustrates the average monthly humidity levels in Savannakhet, 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 Savannakhet is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%54%45%40%65%82%90%92%86%80%72%67%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Savannakhet

In Savannakhet 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 Savannakhet, you can check here.

Maximum UV Index Levels in Savannakhet for September

The chart shows the monthly maximum UV Index (UVI) for Savannakhet 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 Savannakhet typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141315141412109
Data source: Savannakhet 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 Savannakhet Compares to Other Months

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

This table compares monthly weather conditions in Savannakhet, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)2 mm (0.1 inches)59%very high
February Weather24°C (76°F)12 mm (0.5 inches)54%extreme
March Weather28°C (82°F)38 mm (1.5 inches)45%extreme
April Weather29°C (84°F)65 mm (2.6 inches)40%extreme
May Weather29°C (84°F)168 mm (6.6 inches)65%extreme
June Weather29°C (84°F)180 mm (7.1 inches)82%extreme
July Weather28°C (82°F)379 mm (14.9 inches)90%extreme
August Weather28°C (82°F)309 mm (12.2 inches)92%extreme
September Weather28°C (82°F)271 mm (10.7 inches)86%extreme
October Weather27°C (80°F)167 mm (6.6 inches)80%extreme
November Weather25°C (78°F)30 mm (1.2 inches)72%very high
December Weather23°C (73°F)5 mm (0.2 inches)66%very high

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