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September Weather in Hoan Lao, Vietnam

Last updated: August 28, 2025

In Hoan Lao, Vietnam, the average temperature in September hovers around 28°C (83°F), with a refreshing minimum of 24°C (75°F) and a sizzling maximum of 34°C (94°F). During this time, you can expect about 386 mm (15.2 in) of precipitation spread over 19 days, resulting in an average humidity of 87%. So, be prepared for a warm and humid experience!

September Temperature in Hoan Lao

In September in Hoan Lao, the average temperature is 28°C (83°F), with maximums reaching 34°C (94°F) and minimums dropping to as low as 24°C (75°F). This warm climate makes it an ideal destination for outdoor activities and relaxation under the sun.

September Weather in Hoan Lao: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hoan Lao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hoan Lao, September typically has an average temperature of 28°C (83°F), with highs reaching up to 34°C (94°F) and lows dropping to around 24°C (75°F).
JanFebMarAprMayJunJulAugSepOctNovDec686874778286848482787469
Data source: Temperature data for Hoan Lao 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 Hoan Lao

In Hoan Lao, in September, the total precipitation amount is 386 mm (15.2 in) over the course of 19 days.

September Precipitation Trends in Hoan Lao

The chart displays monthly precipitation patterns in Hoan Lao, 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 Hoan Lao, September typically receives around 386 mm (15.2 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec14592891009147200135386734424250
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hoan Lao

In Hoan Lao in September humidity is 87%. With an average temperature of 28°C (83°F), this humidity feels like you're enveloped in a warm, sticky blanket, making outdoor activities slightly uncomfortable and travel plans require frequent breaks for hydration and respite from the heat.

September Average Humidity in Hoan Lao

This chart illustrates the average monthly humidity levels in Hoan Lao, 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 Hoan Lao is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%73%64%60%73%82%90%92%87%85%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hoan Lao

In Hoan Lao in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Hoan Lao.

Maximum UV Index Levels in Hoan Lao for September

The chart shows the monthly maximum UV Index (UVI) for Hoan Lao 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 Hoan Lao typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9111314141314141312108
Data source: Hoan Lao 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 Hoan Lao Compares to Other Months

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

This table compares monthly weather conditions in Hoan Lao, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)145 mm (5.7 inches)77%very high
February Weather20°C (69°F)92 mm (3.6 inches)73%extreme
March Weather23°C (74°F)89 mm (3.5 inches)64%extreme
April Weather25°C (77°F)100 mm (3.9 inches)60%extreme
May Weather28°C (82°F)91 mm (3.6 inches)73%extreme
June Weather30°C (86°F)47 mm (1.8 inches)82%extreme
July Weather29°C (85°F)199 mm (7.9 inches)90%extreme
August Weather29°C (84°F)135 mm (5.3 inches)92%extreme
September Weather28°C (83°F)386 mm (15.2 inches)87%extreme
October Weather25°C (78°F)734 mm (28.9 inches)85%extreme
November Weather23°C (74°F)424 mm (16.7 inches)84%very high
December Weather20°C (69°F)250 mm (9.8 inches)83%very high

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