Weather in Dong Hoi in September 2025
Average weather
Average temperature in Dong Hoi in September
Going from a maximum of +35°C during the day to a minimum of +26°C during the night, the temperature in September averages around +30°C.
The average maximum temperature goes down 22% by the end of the month, compared with the beginning of the month, from +32°C to +30°C.
Is Dong Hoi warm or cold in September?
Dong Hoi is typically warm in September.
Maximum temperatures go down compared to the previous month from +31°C to +30°C. The minimum temperature also goes down from +27°C to +26°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Dong Hoi:
Climate in Dong Hoi in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +31°C | +30°C | +27°C | ||||
| Min. temperature | ||||||
| +24°C | +20°C | +18°C | ||||
| Max. temperature | ||||||
| +36°C | +36°C | +32°C | ||||
| Rainfall | ||||||
| 148 mm | 348 mm | 541 mm | ||||
| Wind | ||||||
| 3 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 77% | 83% | 86% | ||||
| Air pressure | ||||||
| 1004 HPa | 1007 HPa | 1011 HPa | ||||
| Sunny days | ||||||
| 0 | 1 | 1 | ||||
| Cloudy days | ||||||
| 7 | 3 | 3 | ||||
| Rainy days | ||||||
| 16 | 21 | 26 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +31°C in the day, the average maximum temperature lowers to +30°C. Prepare for more rain. Average rainfall goes from 148 mm to 348 mm. Humidity rises from 77% to 83%. Winds are calmer in comparison to August, going down from 3 m/s to 2 m/s on average. The good news is there are likely to be more sunny days in September, from 0 to 1.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 2 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Dong Hoi is gradually decreasing during September, going from 2 m/s to 1 m/s over the course of the month.
Rain
How was the weather last September in Dong Hoi?
Climate Change over Years
The climate in Dong Hoi in September has not changed much over the last 43 years.
The average temperature was the lowest in 2011 (+26°C) and the highest in 2019 (+29°C). The driest year was 1982 with only 1599 mm of rainfall, and the wettest year was 2020 with 3418 mm.
FAQ
Is September a good time to visit Dong Hoi?
Can you sunbathe in Dong Hoi in September?
Is Dong Hoi rainy in September?
Is it sunny in Dong Hoi in September?
Other cities in Vietnam
Monthly weather in Dong Hoi
Source of the data
For this page, we’ve looked at the typical weather in Dong Hoi, 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.