Mekong Delta Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in the Mekong Delta, Vietnam in September.

Considering a trip to the Mekong Delta, Vietnam this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in the Mekong Delta in September

The Mekong Delta, Vietnam is a region in Vietnam. September in the Mekong Delta generally has very warm temperatures, with heavy precipitation.

Temperatures

You can expect very warm maximum daytime temperatures of around 32°C (90°F) and nighttime temperatures around 25°C (77°F) in Can Tho. These night and day temperatures are average and some days may be even warmer. So be prepared and dress for the heat.

For a closer look at conditions across the Mekong Delta, Vietnam, refer to the map below.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Can Tho with an average of 282 mm (11 in) to heavy rainfall in My Tho with 313 mm (12 in).

Average sunshine

Sunshine amounts are decent in most places. Can Tho gets approximately 165 hours of sunlight in September, offering a reasonable amount of both bright and cloudy periods. Curious about sunnier destinations? Our weather planner makes it easy to find places worldwide with pleasant weather.

Explore the Mekong Delta by month

Pick a month to see the average temperature, rainfall and sunshine in the Mekong Delta — and find the best time to visit. (based on Can Tho)

Best Places to Visit in the Mekong Delta in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across the Mekong Delta.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in the Mekong Delta

What is the weather like in September for some of the most popular destinations in the Mekong Delta, Vietnam?

Temperature range in the Mekong Delta (September)

Precipitation variation in the Mekong Delta (September)

Can Tho

In September Can Tho generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
32°C (90°F)
32°C (90°F)
32°C (90°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
176 hours
165 hours
177 hours
Monthly rainfall
249 mm (9.8 in)
282 mm (11 in)
297 mm (12 in)
Monthly rainy days
17 days
19 days
19 days
Weather conditions

My Tho

In September My Tho generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
32°C (90°F)
32°C (90°F)
32°C (90°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
172 hours
163 hours
183 hours
Monthly rainfall
272 mm (11 in)
313 mm (12 in)
313 mm (12 in)
Monthly rainy days
18 days
20 days
19 days
Weather conditions

Ben Tre

In September Ben Tre generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
32°C (90°F)
32°C (90°F)
32°C (90°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
176 hours
165 hours
177 hours
Monthly rainfall
272 mm (11 in)
311 mm (12 in)
315 mm (12 in)
Monthly rainy days
18 days
20 days
19 days
Weather conditions

Vĩnh Long

In September Vĩnh Long generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
32°C (90°F)
32°C (90°F)
32°C (90°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
176 hours
165 hours
177 hours
Monthly rainfall
257 mm (10 in)
294 mm (12 in)
290 mm (11 in)
Monthly rainy days
17 days
20 days
19 days
Weather conditions

Trà Vinh

In September Trà Vinh generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
32°C (90°F)
32°C (90°F)
31°C (88°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
163 hours
148 hours
163 hours
Monthly rainfall
263 mm (10 in)
303 mm (12 in)
317 mm (12 in)
Monthly rainy days
18 days
20 days
19 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in the Mekong Delta, in Vietnam.

In our records: Vietnam September extremes

Notable September records observed across cities in Vietnam in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • From our sources, the wettest September day in Vietnam brought 486 mm (19 in) in Bạch Mã on September 4, 2009.

Popular cities in September

Day & night temperatures, rainfall and average weather in the Mekong Delta in September.

City Weather Day temp Night temp Rainfall
Can Tho 32°C (90°F) 25°C (77°F) 282 mm (11 in)
My Tho 32°C (90°F) 25°C (77°F) 313 mm (12 in)
Ben Tre 32°C (90°F) 25°C (77°F) 311 mm (12 in)
Vĩnh Long 32°C (90°F) 25°C (77°F) 294 mm (12 in)
Trà Vinh 32°C (90°F) 25°C (77°F) 303 mm (12 in)
Cao Lãnh 33°C (91°F) 25°C (77°F) 286 mm (11 in)

The Mekong Delta weather in September: frequently asked questions

What is the weather like in the Mekong Delta, Vietnam in September?

September in the Mekong Delta, Vietnam brings poor weather. In Can Tho, daytime temperatures are typically around 32°C (90°F) and nighttime lows hover near 25°C (77°F).

What is the average temperature in the Mekong Delta, Vietnam in September?

Daytime temperatures in Can Tho peak at roughly 32°C (90°F) in September, dropping to about 25°C (77°F) overnight.

Does the Mekong Delta, Vietnam get a lot of rain in September?

Rainfall in the Mekong Delta, Vietnam peaks during September. Can Tho averages roughly 282 mm (11 in), so frequent and sometimes heavy showers are the norm.

Is September a Good Time to Visit the Mekong Delta, Vietnam?

In our view, September might not be the best time to travel to the Mekong Delta, Vietnam with often poor weather in Can Tho.

On average, the best time to visit the Mekong Delta, Vietnam is in January and February with generally pleasant weather in Can Tho. On the other hand, the months of March, April, May, June, July, August, September and October tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in the Mekong Delta.

Weather and climate has detailed information for every country in the world. Are you going to Vietnam? Get detailed historical weather averages for many cities in Vietnam.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.