SeasonMapNong Khiaw weather in September
Laos
September in Nong Khiaw: sweltering, soaked, with clean air — a gamble, with 20 rainy days.
#7 of 12 months in Nong Khiaw · #1135 of 1383 destinations to visit in September · comfort 59/100 (tier D)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Nong Khiaw in September
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Nong Khiaw climate normals — September
| Daytime high | 30°C / 86°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 23°C / 74°F | |
| Feels like (high) | 36°C / 97°F | |
| Rainfall | 204 mm / 8 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 89% | 💦 very humid |
| Dew point | 24°C / 75°F | |
| Sunshine | 8.9 h/day | |
| Daylight | 12.3 h | |
| Wind | 6 km/h / 4 mph | |
| Air quality (US AQI) | 30 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Nong Khiaw in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonschool holidays in 3 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Nong Khiaw's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherNong Khiaw's weather peaks December–February.
Best weatherFair weatherToughest weather
Nearby, and something's on
Within 300 km of Nong Khiaw — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Nong Khiaw?
Nong Khiaw in September — FAQ
- Is September a good time to visit Nong Khiaw?
- September in Nong Khiaw: sweltering, soaked, with clean air — a gamble, with 20 rainy days. It ranks #7 of 12 months for Nong Khiaw on SeasonMap's comfort score (59/100).
- What is the weather like in Nong Khiaw in September?
- In September, Nong Khiaw averages a daily high of 29.9°C and a low of 23.1°C, with about 203.6 mm of rain over roughly 19.8 rainy days.
- What is the air quality in Nong Khiaw in September?
- Nong Khiaw has a mean US Air Quality Index of about 30 in September.
Other months in Nong Khiaw
Compare Nong Khiaw in September
Warmer or cooler than Nong Khiaw in September
Similar destinations in Southeast Asia — September
Within 300 km: Luang Prabang's Dawn alms round etiquette on 1 Jan – 31 Dec, and Vientiane's Southwest monsoon around 15 May – 15 Oct.