Ban Thangon Weather in September

Ban Thangon in September averages 32°C (90°F) during the day and 25°C (77°F) at night. September is part of the rainy season, so frequent rainfall is typical.

Rainfall in Ban Thangon in September

As part of the rainy season, Ban Thangon sees around 19 days of rain in September, with an average of 344 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 Ban Thangon in September

In September, Ban Thangon sees very high temperatures, with highs of 32°C (90°F). Nights drop to around 25°C (77°F). For most visitors, the main thing to prepare for is the heat during the day. Nights stay warm at around 25°C (77°F), so light bedding and good ventilation are worth thinking about.

Sunshine in Ban Thangon in September

The area experiences a moderate amount of sunshine, with approximately 168 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.

Wind Speed in Ban Thangon in September

Wind speeds average 1 m/s (2 knots) during September. At this speed, you'll experience mostly light air movement that's just barely noticeable. As an average, some days will be completely calm while others have gentle breezes you can feel on your skin.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, November and December typically offer the best weather for Ban Thangon.

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• 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 Laos, check out our Ban Thangon's climate page.

Ban Thangon Temperature in September

Min Temperature 25°C (77°F)  

Max Temperature 32°C (90°F)  

Chance of Rain 64%  

Precipitation 344 mm (14 in)  

Rainy days 19 days  

Humidity 83% *  

Windspeed 1 m/s (2 knots) *  

Sunshine 168 hours *  

Percentage Sunshine *  

* Data from: Vientiane, Laos (23 KM, 14 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Ban Thangon typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 25°C (77°F).

Average temperatures in September

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Historical weather for Ban Thangon in September

Browse day-by-day weather records for Ban Thangon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Ban Thangon historical weather extremes in September

Based on weather observations in Ban Thangon between 1986 and 2025, these are the recorded extremes during September.

• The hottest September day on record in Ban Thangon reached 39°C (102°F) (September 3, 1988).
• On September 10, 2004, Ban Thangon saw its coldest September day with temperatures maxing out at 25°C (77°F).
• The lowest overnight temperature recorded in September was 21°C (70°F) (September 22, 2007).
• The wettest September day on record brought 171 mm (6.7 in) of precipitation to Ban Thangon (September 2, 2014).

What to Wear in Ban Thangon in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Ban Thangon 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 Laos, check out our Ban Thangon's climate page.

More climate data for Ban Thangon

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Ban Thangon climate overview or explore weather in Laos.