Dien Bien Phu in Spring

In spring (March, April and May), Dien Bien Phu sees average daytime highs around 28°C and overnight lows near 18°C, with 365 mm of rain over about 46 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.

Over the season highs climb from about 26°C in early March to 29°C by late May. The sky is clear or mostly clear about 35% of the time across spring, and the air most often feels muggy.

Spring is Dien Bien Phu's 3rd-best season to visit on our travel score. For the whole year in context, see Dien Bien Phu's year-round climate.

Avg daytime high: 28°C; warmest season of the year
Avg overnight low: 18°C
Rainfall: 365 mm; 46 wet days
Avg wind: 5 km/h
Travel score: 5.3; 3rd-best season
Months: Mar · Apr · May

← Winter Dien Bien Phu year-round climate Summer →

Spring Summer Fall Winter

Temperature in Dien Bien Phu in Spring

Average highAverage lowShaded bands: 10–90% of days

Over the season highs climb from about 26°C in early March to 29°C by late May.

A typical spring day in Dien Bien Phu reaches about 28°C and drops to 18°C overnight. The warmest of the three months is May, the coolest March.

Dien Bien Phu 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	22° / 11°	35	5	10.8	7.5
Feb	24° / 12°	25	4.8	11.3	7.9
Mar	27° / 16°	55	8.6	11.8	6.9
Apr	29° / 19°	115	15.4	12.5	5.1
May	29° / 21°	195	22.2	13	3.8
Jun	28° / 22°	323	27.3	13.3	3.2
Jul	28° / 22°	403	28.9	13.2	3.4
Aug	28° / 22°	368	28.3	12.7	3.4
Sep	28° / 21°	199	21.5	12.1	4.4
Oct	26° / 19°	72	11.5	11.5	6.3
Nov	24° / 15°	33	5.5	11	7.7
Dec	22° / 12°	29	4.5	10.7	7.6

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Dien Bien Phu gets around 365 mm of rain over 46 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 5 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

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

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 5.2 kWh/m².

Planning a trip in spring

Hazard calendar for Dien Bien Phu

In seasonPeak

In spring, Dien Bien Phu overlaps its monsoon season. The full year is below, with each hazard's peak months called out.

Dien Bien Phu's monsoon runs May–September, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is spring a good time to visit Dien Bien Phu?

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.

5.3

Sightseeing

3rd-best month of the year

6.1

Beach & pool

1st-best month of the year

spring is a reasonable time to visit Dien Bien Phu for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Dien Bien Phu in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Dien Bien Phu sees daytime highs around 28°C and nights near 18°C. Pack light clothes and rain gear. Worth having: sun protection. About 46 days see rain.

light clothesrain gearsun protection

UV index in Dien Bien Phu in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring 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 Dien Bien Phu peaks around August 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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	11	9	10	14	13	14	10	9	8	6
Level	Very high	Very high	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Very high	High

	UV index (midday)	Level
Jan	7	Very high
Feb	9	Very high
Mar	11	Extreme
Apr	9	Very high
May	10	Extreme
Jun	14	Extreme
Jul	13	Extreme
Aug	14	Extreme
Sep	10	Very high
Oct	9	Very high
Nov	8	Very high
Dec	6	High

Air quality in Dien Bien Phu in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in Dien Bien Phu is worst in April — around 303 µg/m³ PM2.5 (very unhealthy), about 32.6× the cleanest month (August, 9 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)	20	37	107	303	53	11	10	9	11	15	17	19
Level	Moderate	Poor	Unhealthy	Very unhealthy	Poor	Good	Good	Good	Good	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	20	Moderate
Feb	37	Poor
Mar	107	Unhealthy
Apr	303	Very unhealthy
May	53	Poor
Jun	11	Good
Jul	10	Good
Aug	9	Good
Sep	11	Good
Oct	15	Moderate
Nov	17	Moderate
Dec	19	Moderate

Location & terrain

Where is Dien Bien Phu?

Dien Bien Phu sits at 21.4°N, 103.0°E, 485 m above sea level, in Vietnam. The nearest listed city is Mường Lay, 69 km away.

Topography around Dien Bien Phu

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Dien Bien Phu.

Within 3 km, the terrain around Dien Bien Phu has significant variations in elevation — a maximum elevation change of 255 m around an average of 505 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,307 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,010 m.

The land around Dien Bien Phu is covered by trees (36%), cropland (30%) and artificial surfaces (24%) within 3 km, trees (62%) and grassland (23%) within 16 km, and trees (79%) within 80 km.

3 km

255 m

trees 36%

16 km

1,307 m

trees 62%

80 km

2,010 m

trees 79%

treesgrasslandcroplandartificial surfacesbare terrainwater

← Winter Dien Bien Phu year-round climate Summer →

Spring weather nearby: Mường Lay 69 km · Thị Trấn Thuận Châu 69 km · Sơn La 93 km · Nong Khiaw 100 km · Ít Ong 105 km · Lai Châu 121 km · Muang Xay 133 km · Sapa 136 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 Dien Bien Phu (21.386°, 103.023°, elevation 485 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.