Nong Khiaw in Summer
In summer (June, July and August), Nong Khiaw sees average daytime highs around 30°C and overnight lows near 24°C, with 761 mm of rain over about 73 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 4% of the time across summer, and the air most often feels oppressive.
Summer is Nong Khiaw's weakest season of the year to visit on our travel score. For the whole year in context, see Nong Khiaw's year-round climate.
- Avg daytime high
- 30°C
- 2nd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 761 mm
- 73 wet days
- Avg wind
- 5 km/h
- Travel score
- 3.0
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Nong Khiaw in Summer
Across summer, daytime highs hold fairly steady around 30°C.
A typical summer day in Nong Khiaw reaches about 30°C and drops to 24°C overnight. The warmest of the three months is June, the coolest August.
How summer really feels in Nong Khiaw
Once humidity and wind are folded in, summer brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Nong Khiaw weather by month
How the three summer months (June, July and August) 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 Summer
The sky is clear or mostly clear about 4% of the time across summer.
Chance of precipitation in Summer
Nong Khiaw gets around 761 mm of rain over 73 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 12 min in early June to 12 h 24 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.4 kWh/m².
Hazard calendar for Nong Khiaw
In summer, 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 summer a good time to visit Nong Khiaw?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Nong Khiaw.
What to pack for Nong Khiaw in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Nong Khiaw sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 73 days see rain.
UV index in Nong Khiaw in Summer
Clear-sky midday UV across summer averages around 13 (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 Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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.