Bỉm Sơn in Winter
In winter (December, January and February), Bỉm Sơn sees average daytime highs around 22°C and overnight lows near 16°C, with 71 mm of rain over about 15 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 22°C. The sky is clear or mostly clear about 16% of the time across winter, and the air most often feels dry.
Winter is Bỉm Sơn's best season of the year to visit on our travel score. For the whole year in context, see Bỉm Sơn's year-round climate.
- Avg daytime high
- 22°C
- coldest season of the year
- Avg overnight low
- 16°C
- Rainfall
- 71 mm
- 15 wet days
- Avg wind
- 9 km/h
- Travel score
- 6.9
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Bỉm Sơn in Winter
Across winter, daytime highs hold fairly steady around 22°C.
A typical winter day in Bỉm Sơn reaches about 22°C and drops to 16°C overnight. The warmest of the three months is December, the coolest January.
How winter really feels in Bỉm 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.
Bỉm 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 | 21° / 15° | 29 | 5.6 | 10.9 | 6.7 |
| Feb | 22° / 16° | 17 | 4.4 | 11.3 | 7.0 |
| Mar | 25° / 19° | 35 | 6.7 | 11.9 | 7.0 |
| Apr | 29° / 22° | 64 | 8.6 | 12.4 | 5.5 |
| May | 32° / 25° | 178 | 15.5 | 12.9 | 3.3 |
| Jun | 34° / 27° | 178 | 14.6 | 13.2 | 2.5 |
| Jul | 33° / 27° | 234 | 17.8 | 13.1 | 2.5 |
| Aug | 32° / 26° | 324 | 23 | 12.7 | 2.6 |
| Sep | 31° / 25° | 278 | 20.8 | 12.1 | 3.2 |
| Oct | 29° / 23° | 156 | 14.5 | 11.5 | 5.1 |
| Nov | 26° / 19° | 57 | 7.9 | 11 | 6.9 |
| Dec | 22° / 16° | 25 | 5.4 | 10.8 | 7.1 |
Cloud cover in Winter
The sky is clear or mostly clear about 16% of the time across winter.
Chance of precipitation in Winter
Bỉm Sơn gets around 71 mm of rain over 15 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 9 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 Bỉm Sơn
In winter, Bỉm Sơn overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Bỉm Sơn sits in the Pacific typhoon belt; the season peaks July–October.
Bỉm Sơn's monsoon runs May–October, when most of the year's rain falls.
Is winter a good time to visit Bỉm 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 Bỉm Sơn for sightseeing.
What to pack for Bỉm Sơn in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Bỉm Sơn sees daytime highs around 22°C and nights near 16°C. Worth packing: light clothes. About 15 days see rain.
Sea temperature near Bỉm 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 36 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 Bỉm 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 Bỉm 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 Bỉm 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 Bỉm 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 Bỉm Sơn?
Bỉm Sơn sits at 20.1°N, 105.9°E, 7 m above sea level, in Vietnam. The nearest listed city is Nga Sơn, 14 km away.
Topography around Bỉm Sơn
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bỉm Sơn.
Within 3 km, the terrain around Bỉm Sơn has only modest variations in elevation — a maximum elevation change of 99 m around an average of 13 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 327 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,500 m.
The land around Bỉm Sơn is covered by trees (39%) and cropland (27%) within 3 km, trees (52%) and cropland (33%) within 16 km, and trees (41%), cropland (29%) and water (23%) 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 Bỉm Sơn (20.0781°, 105.8603°, elevation 7 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.