Nong Khiaw in Fall
In fall (September, October and November), Nong Khiaw sees average daytime highs around 28°C and overnight lows near 20°C, with 269 mm of rain over about 33 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 30°C in early September to 26°C by late November. The sky is clear or mostly clear about 33% of the time across fall, and the air most often feels oppressive.
Fall is Nong Khiaw's 2nd-best season to visit on our travel score. For the whole year in context, see Nong Khiaw's year-round climate.
- Avg daytime high
- 28°C
- 3rd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 269 mm
- 33 wet days
- Avg wind
- 4 km/h
- Travel score
- 5.8
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Nong Khiaw in Fall
Over the season highs ease from about 30°C in early September to 26°C by late November.
A typical fall day in Nong Khiaw reaches about 28°C and drops to 20°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Nong Khiaw
Once humidity and wind are folded in, fall brings about 33 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Nong Khiaw weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 25° / 13° | 19 | 2.9 | 10.9 | 8.2 |
| Feb | 28° / 14° | 10 | 1.7 | 11.3 | 7.4 |
| Mar | 31° / 17° | 33 | 5.9 | 11.9 | 5.3 |
| Apr | 32° / 20° | 81 | 11.4 | 12.5 | 4.1 |
| May | 32° / 23° | 144 | 19 | 13 | 3.3 |
| Jun | 31° / 24° | 179 | 21.3 | 13.2 | 3.0 |
| Jul | 30° / 24° | 283 | 25.4 | 13.1 | 3.0 |
| Aug | 30° / 23° | 299 | 26.2 | 12.7 | 3.1 |
| Sep | 30° / 22° | 180 | 19.9 | 12.1 | 3.9 |
| Oct | 29° / 20° | 66 | 9.8 | 11.5 | 5.7 |
| Nov | 27° / 17° | 23 | 3.7 | 11 | 7.7 |
| Dec | 25° / 13° | 18 | 3 | 10.8 | 8.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 33% of the time across fall.
Chance of precipitation in Fall
Nong Khiaw gets around 269 mm of rain over 33 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 4 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 24 min in early September to 10 h 54 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.4 kWh/m².
Hazard calendar for Nong Khiaw
In fall, Nong Khiaw overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Nong Khiaw's monsoon runs May–September, when most of the year's rain falls.
Is fall a good time to visit Nong Khiaw?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Nong Khiaw for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Nong Khiaw in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Nong Khiaw sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. About 33 days see rain.
UV index in Nong Khiaw in Fall
Clear-sky midday UV across fall averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Nong Khiaw peaks around June 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 7 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 8 | 9 | 9 | 9 | 11 | 14 | 13 | 13 | 11 | 10 | 8 | 7 |
| Level | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 9 | Very high |
| Mar | 9 | Very high |
| Apr | 9 | Very high |
| May | 11 | Extreme |
| Jun | 14 | Extreme |
| Jul | 13 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Very high |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in Nong Khiaw in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Nong Khiaw is worst in April — around 497 µg/m³ PM2.5 (very unhealthy), about 67.1× the cleanest month (September, 7 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 13 | 29 | 231 | 497 | 49 | 9 | 8 | 8 | 7 | 8 | 9 | 10 |
| Level | Moderate | Moderate | Very unhealthy | Very unhealthy | Poor | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 29 | Moderate |
| Mar | 231 | Very unhealthy |
| Apr | 497 | Very unhealthy |
| May | 49 | Poor |
| Jun | 9 | Good |
| Jul | 8 | Good |
| Aug | 8 | Good |
| Sep | 7 | Good |
| Oct | 8 | Good |
| Nov | 9 | Good |
| Dec | 10 | Good |
Where is Nong Khiaw?
Nong Khiaw sits at 20.6°N, 102.6°E, 0 m above sea level, in Laos. The nearest listed city is Muang Xay, 67 km away.
Topography around Nong Khiaw
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nong Khiaw.
Within 3 km, the terrain around Nong Khiaw has very significant variations in elevation — a maximum elevation change of 1,215 m around an average of 609 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,310 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,987 m.
The land around Nong Khiaw is covered by trees (81%) within 3 km, trees (86%) within 16 km, and trees (88%) within 80 km.
Laos travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B / C / E / F
- 230 V · 50 Hz
- Prices
- ≈ 23% of US
- price level, 2025
- GDP per capita
- $2,325
- 2025
- Happiness
- 5.5 / 10
- World Happiness, 2025
- Safe drinking water
- 35%
- of population, 2024
- Road deaths
- 17.9
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Low
- EF EPI 461
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Nong Khiaw (20.5708°, 102.6112°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.