Sa Dec in Summer
In summer (June, July and August), Sa Dec sees average daytime highs around 31°C and overnight lows near 25°C, with 717 mm of rain over about 83 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 31°C. The sky is clear or mostly clear about 2% of the time across summer, and the air most often feels miserable.
Summer is Sa Dec's weakest season of the year to visit on our travel score. For the whole year in context, see Sa Dec's year-round climate.
- Avg daytime high
- 31°C
- 2nd-warmest season
- Avg overnight low
- 25°C
- Rainfall
- 717 mm
- 83 wet days
- Avg wind
- 11 km/h
- Travel score
- 2.5
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Sa Dec in Summer
Across summer, daytime highs hold fairly steady around 31°C.
A typical summer day in Sa Dec reaches about 31°C and drops to 25°C overnight. The warmest of the three months is June, the coolest July.
How summer really feels in Sa Dec
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.
Sa Dec 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 | 30° / 23° | 28 | 4.3 | 11.5 | 5.5 |
| Feb | 31° / 23° | 10 | 2.1 | 11.7 | 5.1 |
| Mar | 33° / 25° | 33 | 5.3 | 11.9 | 3.9 |
| Apr | 34° / 26° | 76 | 11.7 | 12.2 | 2.9 |
| May | 33° / 26° | 196 | 24.9 | 12.5 | 2.2 |
| Jun | 32° / 26° | 239 | 26.4 | 12.6 | 2.4 |
| Jul | 31° / 25° | 235 | 27.9 | 12.5 | 2.5 |
| Aug | 31° / 25° | 242 | 28.3 | 12.3 | 2.5 |
| Sep | 31° / 25° | 267 | 28.2 | 12.1 | 2.4 |
| Oct | 31° / 25° | 278 | 27.3 | 11.8 | 2.6 |
| Nov | 31° / 24° | 135 | 17.3 | 11.5 | 3.6 |
| Dec | 30° / 23° | 66 | 9.3 | 11.4 | 4.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 2% of the time across summer.
Chance of precipitation in Summer
Sa Dec gets around 717 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 Sa Dec
In summer, Sa Dec overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Sa Dec sits in the Pacific typhoon belt; the season peaks July–October.
Sa Dec's rainy season runs May–November, when most of the year's rain falls.
Is summer a good time to visit Sa Dec?
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 Sa Dec.
What to pack for Sa Dec in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Sa Dec sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 83 days see rain.
UV index in Sa Dec 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 Sa Dec 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 Sa Dec 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 Sa Dec 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 Sa Dec?
Sa Dec sits at 10.3°N, 105.8°E, 1 m above sea level, in Vietnam. The nearest listed city is Quận Đức Thịnh, 3.0 km away.
Topography around Sa Dec
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sa Dec.
Within 3 km, the terrain around Sa Dec has only modest variations in elevation — a maximum elevation change of 10 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 16 m; within 80 km, only modest variations in elevation — a maximum elevation change of 210 m.
The land around Sa Dec is covered by trees (31%), artificial surfaces (29%) and cropland (21%) within 3 km, trees (45%) and cropland (40%) within 16 km, and cropland (63%) and trees (30%) 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 Sa Dec (10.2909°, 105.7563°, elevation 1 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.