Ban Donnoun Weather in September
In Ban Donnoun, September brings very high daytime temperatures around 33°C (91°F), with nights cooling to 25°C (77°F). This month falls within the rainy season, so expect frequent rainfall.
Rainfall in Ban Donnoun in September
Ban Donnoun is in the rainy season in September, with rain on around 19 days and an average of 324 mm (13 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.
Temperature in Ban Donnoun in September
In September, expect very high temperatures in Ban Donnoun, with highs of 33°C (91°F) and lows of 25°C (77°F) at night. The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Ban Donnoun in September
The city usually sees around 168 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).
Wind Speed in Ban Donnoun 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.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Ban Donnoun. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 Ban Donnoun's climate page.
Ban Donnoun Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
33°C (91°F)
Chance of Rain
64%
Precipitation
324 mm (13 in)
Rainy days
19 days
Humidity
83% *
Windspeed
1 m/s (2 knots) *
Sunshine
168 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ban Donnoun typically stay consistent throughout September, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
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
Historical weather for Ban Donnoun in September
Browse day-by-day weather records for Ban Donnoun spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ban Donnoun historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Ban Donnoun.
- On September 23, 1981, temperatures climbed to 39°C (102°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 25°C (77°F), recorded on September 10, 2004.
- Ban Donnoun registered its coldest September night on September 25, 2019, with temperatures dropping to 21°C (70°F).
- Peak precipitation in September occurred on September 2, 2014, when 165 mm (6.5 in) of precipitation was measured.
Best Places in Laos in September
Find out more about the weather in Laos and which places have the best travel conditions in this month. See all of Laos in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Ban Donnoun in September
Warm but pleasant conditions in Ban Donnoun in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Ban Donnoun in September
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 Ban Donnoun's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Ban Donnoun climate overview or explore weather in Laos.
