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September Weather in Quoc Oai, Vietnam

Last updated: August 28, 2025

In Quoc Oai, Vietnam during the month of September, the average temperature hovers around 28°C (83°F), with minimums dipping to 21°C (71°F) and maximums soaring up to 37°C (99°F). Expect significant precipitation, averaging 222 mm (8.7 in) over 21 days, and high humidity levels of about 82%. Stay prepared for a warm, wet month!

September Temperature in Quoc Oai

In September in Quoc Oai, the average temperature is 28°C (83°F). The maximum can reach 37°C (99°F), and the minimum can be as low as 21°C (71°F). This makes it an ideal time for travelers seeking warm weather and plenty of outdoor activities.

September Weather in Quoc Oai: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Quoc Oai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Quoc Oai, September typically has an average temperature of 28°C (83°F), with highs reaching up to 37°C (99°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec646672768387868583777265
Data source: Temperature data for Quoc Oai 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 Quoc Oai

In Quoc Oai in September, the precipitation amount is 222 mm (8.7 in) recorded over the course of 21 days.

September Precipitation Trends in Quoc Oai

The chart displays monthly precipitation patterns in Quoc Oai, 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 Quoc Oai, September typically receives around 222 mm (8.7 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec5841651471881892603782222794841
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Quoc Oai

In Quoc Oai in September, humidity is 82%. With an average temperature of 28°C (83°F), this humidity feels like stepping into a warm, damp embrace, which can make traveling feel heavy and exhausting, as every movement can be met with a sticky veil of moisture that clings to the skin.

September Average Humidity in Quoc Oai

This chart illustrates the average monthly humidity levels in Quoc Oai, 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 Quoc Oai is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%71%69%64%73%81%90%89%82%77%72%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Quoc Oai

In Quoc Oai 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 Quoc Oai.

Maximum UV Index Levels in Quoc Oai for September

The chart shows the monthly maximum UV Index (UVI) for Quoc Oai 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 Quoc Oai typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121213121213131197
Data source: Quoc Oai 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 Quoc Oai Compares to Other Months

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

This table compares monthly weather conditions in Quoc Oai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)58 mm (2.3 inches)66%very high
February Weather19°C (66°F)41 mm (1.6 inches)71%very high
March Weather22°C (73°F)65 mm (2.5 inches)69%extreme
April Weather25°C (77°F)147 mm (5.8 inches)64%extreme
May Weather28°C (83°F)188 mm (7.4 inches)73%extreme
June Weather31°C (87°F)189 mm (7.4 inches)81%extreme
July Weather30°C (86°F)260 mm (10.2 inches)90%extreme
August Weather29°C (85°F)378 mm (14.9 inches)89%extreme
September Weather28°C (83°F)222 mm (8.7 inches)82%extreme
October Weather25°C (78°F)279 mm (11.0 inches)77%extreme
November Weather22°C (73°F)48 mm (1.9 inches)72%very high
December Weather18°C (65°F)41 mm (1.6 inches)71%high

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