Cao Lãnh in Summer
In summer (June, July and August), Cao Lãnh sees average daytime highs around 32°C and overnight lows near 25°C, with 684 mm of rain over about 83 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Across summer, daytime highs hold fairly steady around 32°C. The sky is clear or mostly clear about 2% of the time across summer, and the air most often feels miserable.
Summer is Cao Lãnh's weakest season of the year to visit on our travel score. For the whole year in context, see Cao Lãnh's year-round climate.
- Avg daytime high
- 32°C
- 2nd-warmest season
- Avg overnight low
- 25°C
- Rainfall
- 684 mm
- 83 wet days
- Avg wind
- 11 km/h
- Travel score
- 2.3
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Cao Lãnh in Summer
Across summer, daytime highs hold fairly steady around 32°C.
A typical summer day in Cao Lãnh reaches about 32°C and drops to 25°C overnight. The warmest of the three months is June, the coolest July.
How summer really feels in Cao Lãnh
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.
Cao Lãnh 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 | 31° / 23° | 26 | 4.1 | 11.5 | 5.0 |
| Feb | 32° / 23° | 13 | 1.9 | 11.7 | 4.7 |
| Mar | 34° / 25° | 31 | 5.6 | 11.9 | 3.5 |
| Apr | 35° / 26° | 79 | 12.6 | 12.2 | 2.5 |
| May | 33° / 26° | 179 | 24.3 | 12.5 | 2.1 |
| Jun | 32° / 26° | 216 | 26.6 | 12.6 | 2.3 |
| Jul | 31° / 25° | 227 | 27.9 | 12.6 | 2.4 |
| Aug | 32° / 25° | 240 | 28.2 | 12.3 | 2.3 |
| Sep | 32° / 25° | 277 | 28.2 | 12.1 | 2.2 |
| Oct | 32° / 25° | 288 | 26.9 | 11.8 | 2.5 |
| Nov | 32° / 24° | 140 | 16.3 | 11.5 | 3.5 |
| Dec | 31° / 23° | 63 | 8.9 | 11.4 | 4.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 2% of the time across summer.
Chance of precipitation in Summer
Cao Lãnh gets around 684 mm of rain over 83 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 11 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 36 min in early June to 12 h 12 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 4.7 kWh/m².
Hazard calendar for Cao Lãnh
In summer, Cao Lãnh overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Cao Lãnh's rainy season runs May–November, when most of the year's rain falls.
Is summer a good time to visit Cao Lãnh?
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 Cao Lãnh.
What to pack for Cao Lãnh in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Cao Lãnh sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 83 days see rain.
UV index in Cao Lãnh in Summer
Clear-sky midday UV across summer averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Cao Lãnh peaks around August 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 9 (very 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) | 10 | 11 | 13 | 12 | 12 | 11 | 12 | 13 | 13 | 9 | 9 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 9 | Very high |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Cao Lãnh 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 Cao Lãnh is worst in January — around 72 µg/m³ PM2.5 (unhealthy), about 2.4× the cleanest month (August, 30 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) | 72 | 59 | 53 | 53 | 47 | 38 | 34 | 30 | 40 | 56 | 68 | 70 |
| Level | Unhealthy | Unhealthy | Poor | Poor | Poor | Poor | Moderate | Moderate | Poor | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 72 | Unhealthy |
| Feb | 59 | Unhealthy |
| Mar | 53 | Poor |
| Apr | 53 | Poor |
| May | 47 | Poor |
| Jun | 38 | Poor |
| Jul | 34 | Moderate |
| Aug | 30 | Moderate |
| Sep | 40 | Poor |
| Oct | 56 | Unhealthy |
| Nov | 68 | Unhealthy |
| Dec | 70 | Unhealthy |
Where is Cao Lãnh?
Cao Lãnh sits at 10.5°N, 105.6°E, 5 m above sea level, in Vietnam. The nearest listed city is Quận Đức Thịnh, 20 km away.
Topography around Cao Lãnh
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Cao Lãnh.
Within 3 km, the terrain around Cao Lãnh has only modest variations in elevation — a maximum elevation change of 19 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 23 m; within 80 km, large variations in elevation — a maximum elevation change of 680 m.
The land around Cao Lãnh is covered by trees (49%) and artificial surfaces (32%) within 3 km, cropland (51%) and trees (35%) within 16 km, and cropland (69%) and trees (24%) 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 Cao Lãnh (10.4602°, 105.6329°, elevation 5 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.