Sapa in Summer
In summer (June, July and August), Sapa sees average daytime highs around 27°C and overnight lows near 21°C, with 1126 mm of rain over about 87 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 27°C. The sky is clear or mostly clear about 3% of the time across summer, and the air most often feels muggy.
Summer is Sapa's weakest season of the year to visit on our travel score. For the whole year in context, see Sapa's year-round climate.
- Avg daytime high
- 27°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 1126 mm
- 87 wet days
- Avg wind
- 4 km/h
- Travel score
- 3.5
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Sapa in Summer
Across summer, daytime highs hold fairly steady around 27°C.
A typical summer day in Sapa reaches about 27°C and drops to 21°C overnight. The warmest of the three months is June, the coolest August.
Sapa 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 | 18° / 10° | 82 | 12.4 | 10.8 | 5.3 |
| Feb | 19° / 11° | 73 | 13 | 11.2 | 5.6 |
| Mar | 23° / 14° | 132 | 16.9 | 11.8 | 5.8 |
| Apr | 25° / 17° | 177 | 21.7 | 12.5 | 5.0 |
| May | 27° / 20° | 236 | 25.8 | 13.1 | 4.1 |
| Jun | 27° / 21° | 344 | 28.9 | 13.3 | 3.4 |
| Jul | 27° / 21° | 396 | 29.7 | 13.2 | 3.4 |
| Aug | 27° / 21° | 385 | 28.7 | 12.8 | 3.6 |
| Sep | 26° / 20° | 202 | 22.4 | 12.1 | 4.5 |
| Oct | 24° / 18° | 108 | 17.4 | 11.5 | 5.7 |
| Nov | 22° / 14° | 61 | 10.3 | 10.9 | 6.4 |
| Dec | 18° / 11° | 63 | 10 | 10.7 | 5.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 3% of the time across summer.
Chance of precipitation in Summer
Sapa gets around 1126 mm of rain over 87 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 18 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 4.2 kWh/m².
Hazard calendar for Sapa
In summer, Sapa overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Sapa's monsoon runs May–September, when most of the year's rain falls.
Is summer a good time to visit Sapa?
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 Sapa.
What to pack for Sapa in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Sapa sees daytime highs around 27°C and nights near 21°C. Pack light clothes and rain gear. About 87 days see rain.
UV index in Sapa 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 Sapa peaks around June 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (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) | 6 | 8 | 11 | 8 | 10 | 14 | 13 | 12 | 10 | 8 | 7 | 5 |
| Level | High | Very high | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Very high | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 11 | Extreme |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 14 | Extreme |
| Jul | 13 | Extreme |
| Aug | 12 | Extreme |
| Sep | 10 | Very high |
| Oct | 8 | Very high |
| Nov | 7 | High |
| Dec | 5 | High |
Air quality in Sapa 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 Sapa is worst in April — around 70 µg/m³ PM2.5 (unhealthy), about 5.0× the cleanest month (July, 14 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) | 25 | 33 | 54 | 70 | 28 | 15 | 14 | 15 | 18 | 22 | 23 | 25 |
| Level | Moderate | Moderate | Poor | Unhealthy | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 25 | Moderate |
| Feb | 33 | Moderate |
| Mar | 54 | Poor |
| Apr | 70 | Unhealthy |
| May | 28 | Moderate |
| Jun | 15 | Moderate |
| Jul | 14 | Moderate |
| Aug | 15 | Moderate |
| Sep | 18 | Moderate |
| Oct | 22 | Moderate |
| Nov | 23 | Moderate |
| Dec | 25 | Moderate |
Where is Sapa?
Sapa sits at 22.3°N, 103.8°E, 0 m above sea level, in Vietnam. The nearest listed city is Lào Cai, 21 km away.
Topography around Sapa
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sapa.
Within 3 km, the terrain around Sapa has large variations in elevation — a maximum elevation change of 957 m around an average of 1,481 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,006 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,050 m.
The land around Sapa is covered by trees (56%) and grassland (28%) within 3 km, trees (86%) within 16 km, and trees (84%) 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 Sapa (22.3402°, 103.8441°, 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.