Mường Lay in Summer
In summer (June, July and August), Mường Lay sees average daytime highs around 29°C and overnight lows near 23°C, with 1272 mm of rain over about 85 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 4% of the time across summer, and the air most often feels oppressive.
Summer is Mường Lay's weakest season of the year to visit on our travel score. For the whole year in context, see Mường Lay's year-round climate.
- Avg daytime high
- 29°C
- warmest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 1272 mm
- 85 wet days
- Avg wind
- 2 km/h
- Travel score
- 3.0
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Mường Lay in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Mường Lay reaches about 29°C and drops to 23°C overnight. The warmest of the three months is June, the coolest August.
How summer really feels in Mường Lay
Once humidity and wind are folded in, summer brings about 72 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.
Mường Lay 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 | 21° / 12° | 59 | 8 | 10.8 | 6.8 |
| Feb | 23° / 12° | 54 | 8.3 | 11.2 | 7.1 |
| Mar | 26° / 15° | 123 | 13.1 | 11.8 | 6.3 |
| Apr | 28° / 19° | 219 | 19.5 | 12.5 | 4.7 |
| May | 29° / 21° | 328 | 25.2 | 13 | 3.5 |
| Jun | 29° / 23° | 455 | 28.3 | 13.3 | 2.9 |
| Jul | 29° / 23° | 453 | 29.4 | 13.2 | 3.0 |
| Aug | 29° / 23° | 364 | 26.9 | 12.8 | 3.2 |
| Sep | 29° / 22° | 187 | 19.7 | 12.1 | 4.2 |
| Oct | 27° / 20° | 86 | 13.7 | 11.5 | 5.9 |
| Nov | 24° / 16° | 55 | 8 | 10.9 | 7.2 |
| Dec | 21° / 13° | 47 | 6.2 | 10.7 | 7.1 |
Cloud cover in Summer
The sky is clear or mostly clear about 4% of the time across summer.
Chance of precipitation in Summer
Mường Lay gets around 1272 mm of rain over 85 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 2 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 12 min in early June to 12 h 30 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 4.1 kWh/m².
Hazard calendar for Mường Lay
In summer, Mường Lay overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Mường Lay's monsoon runs April–August, when most of the year's rain falls.
Is summer a good time to visit Mường Lay?
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 Mường Lay.
What to pack for Mường Lay in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Mường Lay sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 85 days see rain.
UV index in Mường Lay 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 Mường Lay peaks around June 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 6 (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) | 7 | 9 | 11 | 9 | 11 | 14 | 13 | 12 | 10 | 9 | 8 | 6 |
| Level | High | Very high | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 7 | High |
| Feb | 9 | Very high |
| Mar | 11 | Extreme |
| Apr | 9 | Very high |
| May | 11 | Extreme |
| Jun | 14 | Extreme |
| Jul | 13 | Extreme |
| Aug | 12 | Extreme |
| Sep | 10 | Very high |
| Oct | 9 | Very high |
| Nov | 8 | Very high |
| Dec | 6 | High |
Air quality in Mường Lay 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 Mường Lay is worst in April — around 99 µg/m³ PM2.5 (unhealthy), about 8.1× the cleanest month (July, 12 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) | 31 | 41 | 73 | 99 | 32 | 14 | 12 | 13 | 17 | 23 | 26 | 30 |
| Level | Moderate | Poor | Unhealthy | Unhealthy | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 31 | Moderate |
| Feb | 41 | Poor |
| Mar | 73 | Unhealthy |
| Apr | 99 | Unhealthy |
| May | 32 | Moderate |
| Jun | 14 | Moderate |
| Jul | 12 | Moderate |
| Aug | 13 | Moderate |
| Sep | 17 | Moderate |
| Oct | 23 | Moderate |
| Nov | 26 | Moderate |
| Dec | 30 | Moderate |
Where is Mường Lay?
Mường Lay sits at 22.0°N, 103.1°E, 496 m above sea level, in Vietnam. The nearest listed city is Lai Châu, 55 km away.
Topography around Mường Lay
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mường Lay.
Within 3 km, the terrain around Mường Lay has large variations in elevation — a maximum elevation change of 987 m around an average of 501 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,867 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,950 m.
The land around Mường Lay is covered by trees (78%) within 3 km, trees (80%) within 16 km, and trees (80%) within 80 km.
Vietnam travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B / C / F
- 220 V · 50 Hz
- Prices
- ≈ 29% of US
- price level, 2025
- GDP per capita
- $5,066
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Safe drinking water
- 59%
- of population, 2024
- Homicide rate
- 1.5
- per 100k, 2011
- Road deaths
- 30.6
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 500
- 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 Mường Lay (22°, 103.1333°, elevation 496 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.