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September Weather in Mo Cay, Vietnam

Last updated: August 28, 2025

Experience the tropical climate of Mo Cay, Vietnam in September, where the average temperature soars to a warm 27°C (82°F). Be prepared for a range, as the minimum can dip to 24°C (76°F) while the maximum reaches a sizzling 34°C (94°F). Keep your umbrella handy, as precipitation averages 272 mm (10.7 in) over 27 days, combined with a high average humidity of 89%. Enjoy the warmth but don't forget to hydrate!

September Temperature in Mo Cay

In September in Mo Cay, the average temperature is 27°C (82°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop as low as 24°C (76°F). This warm climate makes Mo Cay an ideal destination for travelers seeking sun and outdoor activities.

September Weather in Mo Cay: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Mo Cay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mo Cay, September typically has an average temperature of 27°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 24°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec808082848483828281818180
Data source: Temperature data for Mo Cay 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 Mo Cay

In Mo Cay in September, the total precipitation amount is 272 mm (10.7 in) spread over 27 days.

September Precipitation Trends in Mo Cay

The chart displays monthly precipitation patterns in Mo Cay, 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 Mo Cay, September typically receives around 272 mm (10.7 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec4217178521822327729527232018883
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mo Cay

In Mo Cay in September, humidity is 89%. With an average temperature of 27°C (82°F), this humidity feels like a warm, steamy blanket enveloping you, making outdoor activities challenging and encouraging travelers to seek the comfort of shaded areas or refreshing indoor spaces.

September Average Humidity in Mo Cay

This chart illustrates the average monthly humidity levels in Mo Cay, 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 Mo Cay 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 Mo Cay

In Mo Cay 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 Mo Cay, you can check here.

Maximum UV Index Levels in Mo Cay for September

The chart shows the monthly maximum UV Index (UVI) for Mo Cay 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 Mo Cay typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec101316141413131414131110
Data source: Mo Cay 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 Mo Cay Compares to Other Months

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

This table compares monthly weather conditions in Mo Cay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)42 mm (1.6 inches)65%very high
February Weather27°C (80°F)17 mm (0.7 inches)61%extreme
March Weather28°C (83°F)17 mm (0.7 inches)58%extreme
April Weather29°C (84°F)85 mm (3.3 inches)60%extreme
May Weather29°C (84°F)218 mm (8.6 inches)80%extreme
June Weather28°C (83°F)223 mm (8.8 inches)87%extreme
July Weather28°C (82°F)277 mm (10.9 inches)89%extreme
August Weather28°C (82°F)295 mm (11.6 inches)90%extreme
September Weather27°C (82°F)272 mm (10.7 inches)89%extreme
October Weather27°C (81°F)320 mm (12.6 inches)87%extreme
November Weather27°C (81°F)188 mm (7.4 inches)87%extreme
December Weather27°C (80°F)83 mm (3.3 inches)80%very high

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