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September Weather in Sa Thay, Vietnam

Last updated: August 28, 2025

In September, the average temperature in Sa Thay, Vietnam hovers around 24°C (76°F), providing a pleasant climate for visitors. However, temperatures can vary significantly, with minimums dipping to 19°C (66°F) and maximums soaring to 32°C (90°F). Be prepared for rain, as the area experiences an average precipitation of 253 mm (10.0 in) over 27 days, contributing to an average humidity level of a steamy 88%.

September Temperature in Sa Thay

In September in Sa Thay, the average temperature is 24°C (76°F). Maximums can reach 32°C (90°F) and minimums can be as low as 19°C (66°F). This pleasant weather makes it an ideal time for outdoor activities and exploring the local attractions.

September Weather in Sa Thay: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sa Thay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sa Thay, September typically has an average temperature of 24°C (76°F), with highs reaching up to 32°C (90°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec727479787877757676767472
Data source: Temperature data for Sa Thay 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 Sa Thay

In Sa Thay in September, the precipitation amount is 253 mm (10.0 in) during a period of 27 days.

September Precipitation Trends in Sa Thay

The chart displays monthly precipitation patterns in Sa Thay, 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 Sa Thay, September typically receives around 253 mm (10.0 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec6640951942142852672532579220
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sa Thay

In Sa Thay in September humidity is 88%. With an average temperature of 24°C (76°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel like a gentle swim through the air, where every step is accompanied by a comforting yet slightly oppressive warmth.

September Average Humidity in Sa Thay

This chart illustrates the average monthly humidity levels in Sa Thay, 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 Sa Thay is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%83%78%75%80%85%85%87%88%90%91%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sa Thay

In Sa Thay 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 Sa Thay, you can check here.

Maximum UV Index Levels in Sa Thay for September

The chart shows the monthly maximum UV Index (UVI) for Sa Thay 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 Sa Thay typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315161514151514131110
Data source: Sa Thay 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 Sa Thay Compares to Other Months

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

This table compares monthly weather conditions in Sa Thay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)6 mm (0.2 inches)86%extreme
February Weather23°C (74°F)6 mm (0.2 inches)83%extreme
March Weather26°C (79°F)40 mm (1.6 inches)78%extreme
April Weather26°C (79°F)95 mm (3.8 inches)75%extreme
May Weather26°C (79°F)194 mm (7.6 inches)80%extreme
June Weather25°C (77°F)214 mm (8.4 inches)85%extreme
July Weather24°C (76°F)285 mm (11.2 inches)85%extreme
August Weather24°C (76°F)267 mm (10.5 inches)87%extreme
September Weather24°C (76°F)253 mm (10.0 inches)88%extreme
October Weather24°C (76°F)257 mm (10.1 inches)90%extreme
November Weather24°C (75°F)92 mm (3.6 inches)91%extreme
December Weather22°C (72°F)20 mm (0.8 inches)89%very high

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