Nga Sơn in Winter
In winter (December, January and February), Nga Sơn sees average daytime highs around 21°C and overnight lows near 16°C, with 79 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 21°C. The sky is clear or mostly clear about 19% of the time across winter, and the air most often feels dry.
Winter is Nga Sơn's best season of the year to visit on our travel score. For the whole year in context, see Nga Sơn's year-round climate.
- Avg daytime high
- 21°C
- coldest season of the year
- Avg overnight low
- 16°C
- Rainfall
- 79 mm
- 16 wet days
- Avg wind
- 12 km/h
- Travel score
- 6.8
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Nga Sơn in Winter
Across winter, daytime highs hold fairly steady around 21°C.
A typical winter day in Nga Sơn reaches about 21°C and drops to 16°C overnight. The warmest of the three months is December, the coolest January.
How winter really feels in Nga Sơn
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Nga Sơn 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 | 20° / 16° | 32 | 6.3 | 10.9 | 6.5 |
| Feb | 21° / 17° | 17 | 3.9 | 11.3 | 6.9 |
| Mar | 23° / 19° | 34 | 6 | 11.9 | 7.1 |
| Apr | 27° / 23° | 60 | 7 | 12.4 | 6.7 |
| May | 30° / 26° | 167 | 14.4 | 12.9 | 4.2 |
| Jun | 32° / 28° | 166 | 14.1 | 13.2 | 3.2 |
| Jul | 32° / 28° | 226 | 16.4 | 13.1 | 3.1 |
| Aug | 31° / 27° | 319 | 22.3 | 12.7 | 3.0 |
| Sep | 30° / 26° | 310 | 20.6 | 12.1 | 3.6 |
| Oct | 28° / 23° | 180 | 14.4 | 11.5 | 5.5 |
| Nov | 25° / 20° | 67 | 8.4 | 11.1 | 7.0 |
| Dec | 22° / 17° | 31 | 5.8 | 10.8 | 7.0 |
Cloud cover in Winter
The sky is clear or mostly clear about 19% of the time across winter.
Chance of precipitation in Winter
Nga Sơn gets around 79 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 dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 12 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 54 min in early December to 11 h 36 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 2.7 kWh/m².
Hazard calendar for Nga Sơn
In winter, Nga Sơn overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Nga Sơn sits in the Pacific typhoon belt; the season peaks July–October.
Nga Sơn's monsoon runs May–October, when most of the year's rain falls.
Is winter a good time to visit Nga Sơn?
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 Nga Sơn for sightseeing.
What to pack for Nga Sơn in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Nga Sơn sees daytime highs around 21°C and nights near 16°C. Little to plan around — just the basics. About 16 days see rain.
Sea temperature near Nga Sơn in Winter
The nearest coast averages about 21°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 22 km away) is warmest in August at about 30°C and coldest in February near 20°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 20 | 21 | 24 | 28 | 29 | 30 | 30 | 29 | 28 | 26 | 23 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 20 | Refreshing |
| Mar | 21 | Refreshing |
| Apr | 24 | Refreshing |
| May | 28 | Warm |
| Jun | 29 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 29 | Tropical |
| Oct | 28 | Warm |
| Nov | 26 | Warm |
| Dec | 23 | Refreshing |
UV index in Nga Sơn in Winter
Clear-sky midday UV across winter averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Nga Sơn peaks around July 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 | 10 | 8 | 10 | 12 | 12 | 11 | 9 | 9 | 7 | 6 |
| Level | Very high | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Very high | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 7 | Very high |
| Feb | 9 | Very high |
| Mar | 10 | Very high |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 9 | Very high |
| Oct | 9 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Nga Sơn 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 Nga Sơn is worst in December — around 134 µg/m³ PM2.5 (unhealthy), about 3.8× the cleanest month (July, 35 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) | 126 | 106 | 94 | 87 | 60 | 42 | 35 | 46 | 69 | 93 | 116 | 134 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Moderate | Poor | Unhealthy | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 126 | Unhealthy |
| Feb | 106 | Unhealthy |
| Mar | 94 | Unhealthy |
| Apr | 87 | Unhealthy |
| May | 60 | Unhealthy |
| Jun | 42 | Poor |
| Jul | 35 | Moderate |
| Aug | 46 | Poor |
| Sep | 69 | Unhealthy |
| Oct | 93 | Unhealthy |
| Nov | 116 | Unhealthy |
| Dec | 134 | Unhealthy |
Where is Nga Sơn?
Nga Sơn sits at 20.0°N, 106.0°E, 8 m above sea level, in Vietnam. The nearest listed city is Bỉm Sơn, 14 km away.
Topography around Nga Sơn
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nga Sơn.
Within 3 km, the terrain around Nga Sơn has only modest variations in elevation — a maximum elevation change of 30 m around an average of 4 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 253 m; within 80 km, large variations in elevation — a maximum elevation change of 989 m.
The land around Nga Sơn is covered by cropland (50%) and artificial surfaces (20%) within 3 km, cropland (37%), trees (23%) and water (20%) within 16 km, and trees (35%), cropland (29%) and water (28%) 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 Nga Sơn (20.0072°, 105.9704°, elevation 8 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.