Long Bien in Spring
In spring (March, April and May), Long Bien sees average daytime highs around 28°C and overnight lows near 22°C, with 369 mm of rain over about 39 wet days across the season. It is the 3rd-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 11% of the time across spring, and the air most often feels miserable.
Spring is Long Bien's 3rd-best season to visit on our travel score. For the whole year in context, see Long Bien's year-round climate.
- Avg daytime high
- 28°C
- 3rd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 369 mm
- 39 wet days
- Avg wind
- 10 km/h
- Travel score
- 5.0
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Long Bien 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 Long Bien reaches about 28°C and drops to 22°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Long Bien
Once humidity and wind are folded in, spring brings about 43 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.
Long Bien 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 | 20° / 15° | 37 | 7.5 | 10.9 | 6.3 |
| Feb | 22° / 16° | 25 | 6.8 | 11.3 | 6.6 |
| Mar | 24° / 19° | 50 | 10 | 11.9 | 6.5 |
| Apr | 28° / 22° | 87 | 10.9 | 12.5 | 5.3 |
| May | 32° / 25° | 232 | 18.2 | 13 | 3.3 |
| Jun | 33° / 27° | 242 | 19.1 | 13.3 | 2.4 |
| Jul | 33° / 27° | 280 | 21.4 | 13.2 | 2.3 |
| Aug | 32° / 26° | 350 | 24.5 | 12.7 | 2.4 |
| Sep | 32° / 25° | 248 | 19.7 | 12.1 | 3.2 |
| Oct | 29° / 23° | 125 | 12.5 | 11.5 | 5.1 |
| Nov | 26° / 19° | 59 | 7.2 | 11 | 7.0 |
| Dec | 22° / 16° | 31 | 6 | 10.7 | 7.1 |
Cloud cover in Spring
The sky is clear or mostly clear about 11% of the time across spring.
Chance of precipitation in Spring
Long Bien gets around 369 mm of rain over 39 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 10 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 30 min in early March to 13 h 12 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 3.9 kWh/m².
Hazard calendar for Long Bien
In spring, Long Bien overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Long Bien's monsoon runs May–September, when most of the year's rain falls.
Is spring a good time to visit Long Bien?
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 Long Bien for sightseeing.
What to pack for Long Bien in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Long Bien sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 39 days see rain.
UV index in Long Bien in Spring
Clear-sky midday UV across spring averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Long Bien peaks around June 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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) | 6 | 7 | 9 | 6 | 8 | 11 | 10 | 9 | 8 | 8 | 6 | 6 |
| Level | High | Very high | Very high | High | Very high | Extreme | Extreme | Very high | Very high | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 7 | Very high |
| Mar | 9 | Very high |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 8 | Very high |
| Nov | 6 | High |
| Dec | 6 | High |
Air quality in Long Bien 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 Long Bien is worst in December — around 171 µg/m³ PM2.5 (very unhealthy), about 3.4× the cleanest month (July, 50 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) | 161 | 136 | 122 | 106 | 76 | 59 | 50 | 68 | 96 | 125 | 152 | 171 |
| Level | Very unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Unhealthy | Unhealthy | Unhealthy | Very unhealthy | Very unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 161 | Very unhealthy |
| Feb | 136 | Unhealthy |
| Mar | 122 | Unhealthy |
| Apr | 106 | Unhealthy |
| May | 76 | Unhealthy |
| Jun | 59 | Unhealthy |
| Jul | 50 | Poor |
| Aug | 68 | Unhealthy |
| Sep | 96 | Unhealthy |
| Oct | 125 | Unhealthy |
| Nov | 152 | Very unhealthy |
| Dec | 171 | Very unhealthy |
Where is Long Bien?
Long Bien sits at 21.0°N, 105.9°E, 10 m above sea level, in Vietnam. The nearest listed city is Vĩnh Tuy, 4.0 km away.
Topography around Long Bien
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Long Bien.
Within 3 km, the terrain around Long Bien has only modest variations in elevation — a maximum elevation change of 20 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 121 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,694 m.
The land around Long Bien is covered by artificial surfaces (53%) and trees (28%) within 3 km, artificial surfaces (37%), trees (26%) and cropland (24%) within 16 km, and trees (51%) and cropland (34%) 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 Long Bien (21.0333°, 105.9°, elevation 10 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.