Vientiane Weather in August
August in Vientiane brings very high temperatures, with highs of 33°C (91°F) and nights dropping to 25°C (77°F). It's the rainiest month of the year, so come prepared with waterproof gear.
Rainfall in Vientiane in August
Vientiane is in the rainy season in August, with rain on around 24 days and an average of 399 mm (16 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.
Temperature in Vientiane in August
In August, expect very high temperatures in Vientiane, with highs of 33°C (91°F) and lows of 25°C (77°F) at night. Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Vientiane in August
The month brings about 135 hours of sunlight, offering a comfortable mix of sun and rainy moments.
Wind Speed in Vientiane in August
Average wind conditions reach 1 m/s (2 knots) in August. This creates generally peaceful weather with subtle air movement. Remember this is an average: some days are windless while others have noticeable or very gentle breezes.August in Vientiane has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Laos, check out our Vientiane's climate page.
Vientiane Temperature in August
Min Temperature
25°C (77°F)
Max Temperature
33°C (91°F)
Chance of Rain
79%
Precipitation
399 mm (16 in)
Rainy days
24 days
Humidity
84%
Windspeed
1 m/s (2 knots)
Sunshine
135 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Vientiane typically stay consistent throughout August, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in August
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 August
Historical weather for Vientiane in August
Browse day-by-day weather records for Vientiane spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Vientiane historical weather extremes in August
According to our 49 years of weather records for Vientiane, the following extremes were recorded between 1976 and 2025.
- On August 9, 1992, temperatures climbed to 37°C (99°F), marking the warmest August day on record.
- Vientiane experienced its chilliest August day on August 9, 2012, reaching only 25°C (77°F).
- Vientiane registered its coldest August night on August 31, 2018, with temperatures dropping to 16°C (61°F).
Best Places in Laos in August
Find out more about the weather in Laos and which places have the best travel conditions in this month. See all of Laos in August →
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What to Wear in Vientiane in August
Warm temperatures in August 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! Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Vientiane in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Laos, check out our Vientiane's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Vientiane climate overview or explore weather in Laos.
