Phong Nha Weather in September

September in Phong Nha sees daytime temperatures around 31°C (88°F) and lows of 24°C (75°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.

Rainfall in Phong Nha in September

Phong Nha is in the rainy season in September, with rain on around 17 days and an average of 343 mm (14 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours, often in the late afternoon.

Temperature in Phong Nha in September

Phong Nha in September gets highs of 31°C (88°F) during the day and drops to 24°C (75°F) at night. Mornings and evenings are often more comfortable than the peak afternoon hours. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.

Sunshine in Phong Nha in September

The city usually sees around 178 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Phong Nha. Our weather planner can help you explore destinations with more pleasant weather conditions.

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• January
• February
• March
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• May
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For a detailed overview over the year and the best time to visit Vietnam, check out our Phong Nha's climate page.

Phong Nha Temperature in September

Min Temperature 24°C (75°F)  

Max Temperature 31°C (88°F)  

Chance of Rain 58%  

Precipitation 343 mm (14 in)  

Rainy days 17 days  

Humidity 82% *  

Sunshine 178 hours *  

Percentage Sunshine *  

* Data from: Đồng Hới, Vietnam (36 KM, 22 Miles).

What to Wear in Phong Nha in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Phong Nha in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Vietnam, check out our Phong Nha's climate page.

More climate data for Phong Nha

Temperature Rainfall Sunshine Humidity

See the full Phong Nha climate overview or explore weather in Vietnam.