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September Weather in Phongsali, Laos

Last updated: August 23, 2025

In Phongsali, Laos, the average temperature in September reaches a comfortable 24°C (76°F), making it an inviting time to explore. Expect a minimum of 16°C (61°F) and a pleasant maximum of 33°C (92°F). However, be prepared for 200 mm (7.9 in) of precipitation spread over 20 days, contributing to the region's average humidity of 83%. Pack accordingly and enjoy your stay!

September Temperature in Phongsali

In September in Phongsali, the average temperature is 24°C (76°F). Maximums can reach 33°C (92°F), while minimums can drop to as low as 16°C (61°F). This pleasant weather makes Phongsali an ideal destination for travelers seeking a comfortable climate.

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

The chart illustrates September temperature patterns in Phongsali, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phongsali, September typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (92°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec616369727678777776726761
Data source: Temperature data for Phongsali 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 Phongsali

In Phongsali in September, the precipitation amount is 200 mm (7.9 in), distributed over a span of 20 days.

September Precipitation Trends in Phongsali

The chart displays monthly precipitation patterns in Phongsali, 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 Phongsali, September typically receives around 200 mm (7.9 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec4635481791522553633612001394545
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Phongsali

In Phongsali in September, humidity is 83%. With an average temperature of 24°C (76°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and possibly causing travelers to sweat more quickly, prompting frequent breaks in shaded areas or the search for refreshing beverages.

September Average Humidity in Phongsali

This chart illustrates the average monthly humidity levels in Phongsali, 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 Phongsali is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec57%57%48%41%60%80%92%92%84%71%68%64%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Phongsali

In Phongsali 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 Phongsali, you can check here.

Maximum UV Index Levels in Phongsali for September

The chart shows the monthly maximum UV Index (UVI) for Phongsali 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 Phongsali typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9101212151415141412108
Data source: Phongsali 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 Phongsali Compares to Other Months

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

This table compares monthly weather conditions in Phongsali, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)46 mm (1.8 inches)57%very high
February Weather17°C (63°F)35 mm (1.4 inches)57%very high
March Weather21°C (70°F)48 mm (1.9 inches)48%extreme
April Weather22°C (72°F)179 mm (7.1 inches)41%extreme
May Weather25°C (77°F)152 mm (6.0 inches)60%extreme
June Weather25°C (78°F)255 mm (10.0 inches)80%extreme
July Weather25°C (77°F)363 mm (14.3 inches)92%extreme
August Weather25°C (77°F)361 mm (14.2 inches)92%extreme
September Weather24°C (76°F)200 mm (7.9 inches)83%extreme
October Weather22°C (72°F)139 mm (5.5 inches)71%extreme
November Weather19°C (67°F)45 mm (1.8 inches)68%very high
December Weather16°C (61°F)45 mm (1.8 inches)64%very high

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