Dien Bien Phu weather in April

In April, Dien Bien Phu sees average daytime highs of 29°C and overnight lows near 19°C, with 115 mm of rain across 15.4 wet days and about 12.5 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 37% of the time in April, and the air most often feels muggy.

Daylight stretches from about 12 h 12 min at the start of April to 12 h 48 min by month's end. Set against the rest of the year, April is Dien Bien Phu's 6th-clearest and 3rd-windiest month. For the whole year in context, see Dien Bien Phu's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
19°
6th coldest
Rainfall
115 mm
15.4 wet days
Daylight
12 h 30 min
5:53 AM – 6:23 PM
Cloud cover
53%
6th clearest
Wind
5 km/h
3rd windiest
Solar energy
5.44 kWh/m²
Travel score
5.1
out of 10

Dien Bien Phu is city in Điện Biên, Vietnam.

Density
1,317/km²
people per km²
Founded
1992

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical April day in Dien Bien Phu reaches about 29°C in the afternoon and slips back to 19°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 33°C. Set against its neighbours, April runs about 1°C warmer than March and on par with May.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12817
22817
32817
42817
52818
62818
72818
82818
92818
102818
112918
122918
132918
142919
152919
162919
172919
182919
192919
202919
212919
222919
232919
242919
252920
262920
272920
282920
292920
302920

Dien Bien Phu weather by month

How April compares with the rest of the year at a glance. April is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 11°35510.87.5
Feb24° / 12°254.811.37.9
Mar27° / 16°558.611.86.9
Apr29° / 19°11515.412.55.1
May29° / 21°19522.2133.8
Jun28° / 22°32327.313.33.2
Jul28° / 22°40328.913.23.4
Aug28° / 22°36828.312.73.4
Sep28° / 21°19921.512.14.4
Oct26° / 19°7211.511.56.3
Nov24° / 15°335.5117.7
Dec22° / 12°294.510.77.6

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 21% of April, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16139
26139
36139
46139
56139
66238
76238
86139
96139
106139
116040
126040
136040
146040
155941
165941
175842
185842
195644
205644
215644
225644
235545
245545
255347
265347
275248
285149
295149
304951

Chance of precipitation in April

Any precipitation

Dien Bien Phu gets around 115 mm of rain over 15.4 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 51% and peaks near 59% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
143
243
344
444
545
646
746
847
948
1048
1149
1249
1350
1450
1551
1651
1752
1852
1953
2054
2154
2255
2356
2456
2556
2657
2757
2858
2959
3059

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the muggy band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 52% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
172249220
262149240
361949260
451849280
551748300
641647320
741546340
841445371
931344391
1031243411
1121142441
1221041461
1321040481
141938511
151837531
161836532
171735552
181733572
190632602
200630613
210529633
220528643
230427654
240426664
250425674
260325675
270324685
280323686
290322696
300321697

Wind in April

Winds average 5 km/h in April.

Across April, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 12 min at the start of April to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over April. Sunrise moves from 6:07 AM to 5:43 AM, and sunset from 6:18 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:076:18
212.26:066:18
312.26:056:19
412.26:046:19
512.36:036:19
612.36:026:20
712.36:016:20
812.36:016:20
912.36:006:21
1012.45:596:21
1112.45:586:21
1212.45:576:22
1312.45:566:22
1412.55:556:22
1512.55:546:23
1612.55:536:23
1712.55:536:23
1812.55:526:24
1912.65:516:24
2012.65:506:24
2112.65:496:25
2212.65:486:25
2312.65:486:25
2412.65:476:26
2512.75:466:26
2612.75:456:26
2712.75:456:27
2812.75:446:27
2912.75:436:28
3012.85:436:28

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.44 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.4 kWh/m² to a high of 5.44 kWh/m² in April across the year — April's 5.44 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in April

Hazard calendar for Dien Bien Phu

In seasonPeak

None of Dien Bien Phu's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 April a good time to visit Dien Bien Phu?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.1
Sightseeing
7th-best month of the year
6.2
Beach & pool
5th-best month of the year

April 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 April

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

In April, Dien Bien Phu sees daytime highs around 29°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Dien Bien Phu in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks 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 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highHighAug 12UV 14Dec 19UV 6
UV index (midday)Level
Jan7Very high
Feb9Very high
Mar11Extreme
Apr9Very high
May10Extreme
Jun14Extreme
Jul13Extreme
Aug14Extreme
Sep10Very high
Oct9Very high
Nov8Very high
Dec6High

Air quality in Dien Bien Phu in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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).

0306090120150180210240270300JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyVery unhealthyUnhealthyGoodModerateApr 15276 µg/m³Aug 109 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb37Poor
Mar107Unhealthy
Apr303Very unhealthy
May53Poor
Jun11Good
Jul10Good
Aug9Good
Sep11Good
Oct15Moderate
Nov17Moderate
Dec19Moderate
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.

Sơn LaNong KhiawÍt OngLai ChâuMuang XaySapa

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
16 km
1,307 m
80 km
2,010 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April 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
none 86%Catholic 6%Buddhist 6%Protestant 1%

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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).