Weather in Nha Trang in September 2025
Average weather
Average temperature in Nha Trang in September
Going from a maximum of +90°F during the day to a minimum of +79°F during the night, the temperature in September averages around +88°F.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +88°F to +88°F.
Is Nha Trang warm or cold in September?
Nha Trang is typically hot in September.
Maximum temperatures go down compared to the previous month from +90°F to +88°F. The minimum temperature also goes down from +81°F to +79°F.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
Take a look at how September is compared to other months in Nha Trang:
Water temperature in Nha Trang in September
Water in Nha Trang in September is Very warm. It varies from +80°F to +86°F, with an average of +83°F. This is almost similar to the air temperature, which averages +88°F.
In September, water temperatures are average relative to the rest of the year:
Can you swim in Nha Trang in September?
Climate in Nha Trang in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +90°F | +88°F | +86°F | ||||
| Min. temperature | ||||||
| +77°F | +75°F | +72°F | ||||
| Max. temperature | ||||||
| +97°F | +97°F | +91°F | ||||
| Rainfall | ||||||
| 203 mm | 305 mm | 279 mm | ||||
| Wind | ||||||
| 0 m/s | 0 m/s | 0 m/s | ||||
| Avg. water temperature | ||||||
| +83°F | +83°F | +82°F | ||||
| Humidity | ||||||
| 79% | 83% | 85% | ||||
| Air pressure | ||||||
| 1006 HPa | 1008 HPa | 1010 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 2 | 1 | 1 | ||||
| Rainy days | ||||||
| 26 | 24 | 27 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +90°F in the day, the average maximum temperature lowers to +88°F. Prepare for more rain. Average rainfall goes from 203 mm to 305 mm. Humidity rises from 79% to 83%. The average wind speed doesn’t change much during September, staying around 0 m/s. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 1 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Nha Trang is gradually increasing during September, going from 1 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Nha Trang?
Climate Change Over the Years
The climate in Nha Trang in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1984 (+85°F) and the highest in 2019 (+88°F). The driest year was 2004 with only 1396 mm of rainfall, and the wettest year was 2008 with 2587 mm.
FAQ
Is September a good time to visit Nha Trang?
Can you sunbathe in Nha Trang in September?
Can you swim in Nha Trang in September?
Is Nha Trang rainy in September?
Is it sunny in Nha Trang in September?
Other cities in Vietnam
Monthly weather in Nha Trang
Source of the data
For this page, we’ve looked at the typical weather in Nha Trang, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.