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Climate

Weather in Vietnam in September

Weather in Vietnam, September
In September, Vietnam sees average highs of 30.9°C (88°F) and lows of 24.9°C (77°F), with around 387 mm of rain.

Vietnam — September

Vietnam September
Daytime high
30.9°C (88°F)
Overnight low
24.9°C (77°F)
Rainfall
387 mm
Best-time rank
Off-peak

How September compares

Vietnam, September vs. the annual average (2025)
This month30.9°C (88°F) / 24.9°C (77°F) · 387 mm
Yearly average28.1°C (83°F) / 21°C (70°F) · 184 mm

September in Vietnam runs 2.8°C (5°F) warmer than the yearly average, and is wetter than the yearly average. Pack layers you can adjust through the day — mild conditions, and something waterproof — this is a wetter month.

Common questions

What is the weather like in Vietnam in September?

Average highs of 30.9°C (88°F) and lows of 24.9°C (77°F), with around 387 mm of rain.

Is September a good time to visit Vietnam?

It is an off-peak month for comfort in Vietnam; March, November, December tend to be more pleasant.

Updated climate normals, 2025