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September Weather in Thong Nhat, Vietnam

Last updated: August 28, 2025

In Thong Nhat, Vietnam, the average temperature in September hovers around 27°C (81°F), making it a warm destination. Daily temperatures range from a comfortable 23°C (74°F) to a toasty 33°C (92°F). However, be prepared for some wet days, as 305 mm (12.0 in) of precipitation can occur over 28 days, along with an average humidity of 89%. Plan accordingly to make the most of your visit!

September Temperature in Thong Nhat

In September in Thong Nhat, the average temperature is a warm 27°C (81°F). The maximum can reach a hot 33°C (92°F), while the minimum can drop to a comfortable 23°C (74°F). This makes Thong Nhat an ideal destination for travelers seeking pleasant weather and outdoor adventures.

September Weather in Thong Nhat: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Thong Nhat, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thong Nhat, September typically has an average temperature of 27°C (81°F), with highs reaching up to 33°C (92°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec808082848382818181818179
Data source: Temperature data for Thong Nhat 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 Thong Nhat

In Thong Nhat in September, the precipitation amount is 305 mm (12.0 in) over the course of 28 days.

September Precipitation Trends in Thong Nhat

The chart displays monthly precipitation patterns in Thong Nhat, 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 Thong Nhat, September typically receives around 305 mm (12.0 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec3612178021826933134430526814663
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Thong Nhat

In Thong Nhat in September humidity is 89%. With an average temperature of 27°C (81°F), this humidity feels like a wet blanket enveloping you, making outdoor activities challenging and travel a little less comfortable.

September Average Humidity in Thong Nhat

This chart illustrates the average monthly humidity levels in Thong Nhat, 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 Thong Nhat is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%58%61%80%87%89%90%89%87%87%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Thong Nhat

In Thong Nhat 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 Thong Nhat.

Maximum UV Index Levels in Thong Nhat for September

The chart shows the monthly maximum UV Index (UVI) for Thong Nhat 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 Thong Nhat typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111416151413141413131110
Data source: Thong Nhat 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 Thong Nhat Compares to Other Months

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

This table compares monthly weather conditions in Thong Nhat, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)36 mm (1.4 inches)65%extreme
February Weather27°C (81°F)12 mm (0.5 inches)61%extreme
March Weather28°C (83°F)17 mm (0.7 inches)58%extreme
April Weather29°C (84°F)80 mm (3.1 inches)60%extreme
May Weather28°C (83°F)217 mm (8.6 inches)80%extreme
June Weather28°C (82°F)269 mm (10.6 inches)87%extreme
July Weather27°C (81°F)331 mm (13.0 inches)89%extreme
August Weather27°C (81°F)344 mm (13.5 inches)90%extreme
September Weather27°C (81°F)305 mm (12.0 inches)89%extreme
October Weather27°C (81°F)267 mm (10.5 inches)87%extreme
November Weather27°C (81°F)146 mm (5.7 inches)87%extreme
December Weather26°C (80°F)63 mm (2.5 inches)80%very high

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