Sa Dec in Winter
In winter (December, January and February), Sa Dec sees average daytime highs around 30°C and overnight lows near 23°C, with 104 mm of rain over about 16 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 23% of the time across winter, and the air most often feels oppressive.
Winter is Sa Dec's best 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
- 30°C
- coldest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 104 mm
- 16 wet days
- Avg wind
- 8 km/h
- Travel score
- 5.1
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Sa Dec in Winter
Across winter, daytime highs hold fairly steady around 30°C.
A typical winter day in Sa Dec reaches about 30°C and drops to 23°C overnight. The warmest of the three months is February, the coolest January.
How winter really feels in Sa Dec
Once humidity and wind are folded in, winter brings about 90 days that feel above 32°C and 0 that feel at or below 0°C.
The story in winter is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Sa Dec weather by month
How the three winter months (December, January and February) 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 Winter
The sky is clear or mostly clear about 23% of the time across winter.
Chance of precipitation in Winter
Sa Dec gets around 104 mm of rain over 16 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 8 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 24 min in early December to 11 h 48 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 5.1 kWh/m².
Hazard calendar for Sa Dec
In winter, Sa Dec overlaps its pacific typhoon 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 winter a good time to visit Sa Dec?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Sa Dec for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Sa Dec in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Sa Dec sees daytime highs around 30°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 16 days see rain.
UV index in Sa Dec in Winter
Clear-sky midday UV across winter averages around 10 (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 Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter 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.