Bỉm Sơn in Spring
In spring (March, April and May), Bỉm Sơn sees average daytime highs around 29°C and overnight lows near 22°C, with 277 mm of rain over about 31 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 23°C in early March to 33°C by late May. The sky is clear or mostly clear about 13% of the time across spring, and the air most often feels miserable.
Spring is Bỉm Sơn's 2nd-best season to visit on our travel score. For the whole year in context, see Bỉm Sơn's year-round climate.
- Avg daytime high
- 29°C
- 2nd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 277 mm
- 31 wet days
- Avg wind
- 8 km/h
- Travel score
- 5.3
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in Bỉm Sơn in Spring
Over the season highs climb from about 23°C in early March to 33°C by late May.
A typical spring day in Bỉm Sơn reaches about 29°C and drops to 22°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Bỉm Sơn
Once humidity and wind are folded in, spring brings about 47 days that feel above 32°C and 0 that feel at or below 0°C.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Bỉm Sơn weather by month
How the three spring months (March, April and May) 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 Spring
The sky is clear or mostly clear about 13% of the time across spring.
Chance of precipitation in Spring
Bỉm Sơn gets around 277 mm of rain over 31 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 8 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 36 min in early March to 13 h 06 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 4.4 kWh/m².
Hazard calendar for Bỉm Sơn
In spring, Bỉm Sơn overlaps its pacific typhoon and monsoon 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 spring a good time to visit Bỉm Sơn?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Bỉm Sơn for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Bỉm Sơn in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Bỉm Sơn sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 31 days see rain.
Sea temperature near Bỉm Sơn in Spring
The nearest coast averages about 24°C across spring — 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 Spring
Clear-sky midday UV across spring averages around 9 (very high — sun protection essential). 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 Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring 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.