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September Weather in Phu Yen, Vietnam

Last updated: August 28, 2025

In September, the average temperature in Phu Yen, Vietnam is a warm 26°C (79°F). Expect lows of about 18°C (65°F) and highs reaching up to 34°C (94°F). With 208 mm (8.2 in) of precipitation over 22 days, the atmosphere remains quite humid, boasting an average humidity level of 82%.

September Temperature in Phu Yen

In September in Phu Yen, the average temperature is 26°C (79°F). The maximum can reach 34°C (94°F) and the minimum can be as low as 18°C (65°F). This pleasant climate makes Phu Yen an ideal destination for travelers seeking warmth and comfortable weather.

September Weather in Phu Yen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Phu Yen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phu Yen, September typically has an average temperature of 26°C (79°F), with highs reaching up to 34°C (94°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec606169737882818078736860
Data source: Temperature data for Phu Yen 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 Phu Yen

In Phu Yen in September, the precipitation amount is 208 mm (8.2 in) over a span of 22 days.

September Precipitation Trends in Phu Yen

The chart displays monthly precipitation patterns in Phu Yen, 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 Phu Yen, September typically receives around 208 mm (8.2 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec72521021882062053454082082455858
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Phu Yen

In Phu Yen in September, humidity is 82%. With an average temperature of 26°C (79°F), this humidity feels like a warm blanket that envelops you, making outdoor activities feel more taxing and requiring frequent breaks to stay hydrated.

September Average Humidity in Phu Yen

This chart illustrates the average monthly humidity levels in Phu Yen, 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 Phu Yen is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%65%57%50%68%79%91%92%82%76%72%68%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Phu Yen

In Phu Yen 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 Phu Yen, you can check here.

Maximum UV Index Levels in Phu Yen for September

The chart shows the monthly maximum UV Index (UVI) for Phu Yen 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 Phu Yen typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121214131414141297
Data source: Phu Yen 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 Phu Yen Compares to Other Months

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

This table compares monthly weather conditions in Phu Yen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (60°F)72 mm (2.8 inches)63%very high
February Weather16°C (62°F)52 mm (2.0 inches)65%very high
March Weather20°C (69°F)102 mm (4.0 inches)57%extreme
April Weather23°C (73°F)188 mm (7.4 inches)50%extreme
May Weather26°C (78°F)206 mm (8.1 inches)68%extreme
June Weather28°C (82°F)205 mm (8.1 inches)79%extreme
July Weather27°C (81°F)345 mm (13.6 inches)91%extreme
August Weather27°C (80°F)408 mm (16.1 inches)92%extreme
September Weather26°C (79°F)208 mm (8.2 inches)82%extreme
October Weather23°C (73°F)245 mm (9.7 inches)76%extreme
November Weather20°C (68°F)58 mm (2.3 inches)72%very high
December Weather16°C (60°F)58 mm (2.3 inches)68%high

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