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September Weather in Cao Phong, Vietnam

Last updated: August 28, 2025

In Cao Phong, Vietnam, the average temperature in September hovers around 27°C (80°F). Expect a minimum of 20°C (69°F) and a maximum of 34°C (94°F). However, prepare for moisture with an average precipitation of 252 mm (9.9 in) spread over 23 days, accompanied by high humidity levels at 82%.

September Temperature in Cao Phong

In September in Cao Phong, the average temperature is 27°C (80°F). Maximums can reach 34°C (94°F), while minimums can dip to as low as 20°C (69°F). This makes it an ideal time for visitors to enjoy warm weather activities and explore the beautiful surroundings.

September Weather in Cao Phong: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cao Phong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cao Phong, September typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (94°F) and lows dropping to around 20°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec626370748084828180746962
Data source: Temperature data for Cao Phong 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 Cao Phong

In Cao Phong in September, the precipitation amount is 252 mm (9.9 in) over a span of 23 days.

September Precipitation Trends in Cao Phong

The chart displays monthly precipitation patterns in Cao Phong, 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 Cao Phong, September typically receives around 252 mm (9.9 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec5940661501932433704502522675641
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cao Phong

In Cao Phong in September, humidity is 82%. With an average temperature of 27°C (80°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel sticky and heavy, often leaving travelers longing for shade and a refreshing drink.

September Average Humidity in Cao Phong

This chart illustrates the average monthly humidity levels in Cao Phong, 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 Cao Phong 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 Cao Phong

In Cao Phong 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 Cao Phong, you can check here.

Maximum UV Index Levels in Cao Phong for September

The chart shows the monthly maximum UV Index (UVI) for Cao Phong 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 Cao Phong typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121213131414141297
Data source: Cao Phong 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 Cao Phong Compares to Other Months

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

This table compares monthly weather conditions in Cao Phong, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (62°F)59 mm (2.3 inches)66%very high
February Weather17°C (63°F)40 mm (1.6 inches)71%very high
March Weather21°C (70°F)66 mm (2.6 inches)69%extreme
April Weather23°C (74°F)150 mm (5.9 inches)64%extreme
May Weather26°C (80°F)193 mm (7.6 inches)73%extreme
June Weather29°C (84°F)243 mm (9.6 inches)81%extreme
July Weather28°C (83°F)370 mm (14.6 inches)90%extreme
August Weather27°C (82°F)450 mm (17.7 inches)89%extreme
September Weather27°C (80°F)252 mm (9.9 inches)82%extreme
October Weather23°C (74°F)267 mm (10.5 inches)77%extreme
November Weather21°C (70°F)56 mm (2.2 inches)72%very high
December Weather17°C (62°F)41 mm (1.6 inches)71%high

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