Dien Bien Phu weather in July

In July, Dien Bien Phu sees average daytime highs of 28°C and overnight lows near 22°C, with 403 mm of rain across 28.9 wet days and about 13.2 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 2% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 13 h 18 min at the start of July to 13 hours by month's end. Set against the rest of the year, July is Dien Bien Phu's 12th-clearest and 8th-windiest month. For the whole year in context, see Dien Bien Phu's year-round climate.

Daytime high
28°
6th warmest
Overnight low
22°
11th coldest
Rainfall
403 mm
28.9 wet days
Daylight
13 h 12 min
5:38 AM – 6:49 PM
Cloud cover
92%
12th clearest
Wind
4 km/h
8th windiest
Solar energy
3.99 kWh/m²
Travel score
3.4
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 July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical July day in Dien Bien Phu reaches about 28°C in the afternoon and slips back to 22°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 31°C. Set against its neighbours, July runs on par with June and on par with August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62822
72822
82822
92822
102822
112822
122822
132822
142822
152822
162822
172822
182822
192822
202822
212822
222822
232822
242822
252822
262822
272822
282822
292822
302822
312822

Dien Bien Phu weather by month

How July compares with the rest of the year at a glance. July is the 6th-warmest and 1st-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 4% of July, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2595
3694
4793
5793
6793
7694
8694
9694
10694
11694
12694
13694
14694
15694
16694
17694
18694
19694
20694
21793
22793
23793
24793
25793
26793
27793
28793
29793
30793
31793

Chance of precipitation in July

Any precipitation

Dien Bien Phu gets around 403 mm of rain over 28.9 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 94% and peaks near 94% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
192
292
392
492
593
693
793
893
993
1093
1193
1294
1394
1494
1594
1694
1794
1894
1994
2094
2194
2294
2394
2494
2594
2694
2794
2894
2994
3094
3194

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
1892
2892
3991
4991
5991
61090
71090
81090
91090
101090
111090
121090
131090
141090
15991
16991
17991
18991
19892
20892
21892
22892
23793
24793
25694
26694
27694
28694
29595
30595
31595

Wind in July

Winds average 4 km/h in July.

Across July, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 h 18 min at the start of July to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over July. Sunrise moves from 5:33 AM to 5:44 AM, and sunset from 6:50 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:336:50
213.35:336:50
313.35:336:50
413.35:346:50
513.35:346:50
613.35:346:50
713.35:356:50
813.35:356:50
913.25:356:50
1013.25:366:50
1113.25:366:50
1213.25:366:50
1313.25:376:50
1413.25:376:49
1513.25:386:49
1613.25:386:49
1713.25:386:49
1813.25:396:49
1913.25:396:48
2013.15:406:48
2113.15:406:48
2213.15:406:48
2313.15:416:47
2413.15:416:47
2513.15:426:47
2613.15:426:46
2713.15:426:46
2813.05:436:45
2913.05:436:45
3013.05:446:45
3113.05:446:44

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 3.99 kWh/m².

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 — July's 3.99 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.0Bright
44.0Bright
54.0Bright
64.0Bright
74.0Bright
84.0Bright
94.0Bright
104.0Bright
114.0Moderate
124.0Moderate
134.0Moderate
144.0Moderate
154.0Moderate
164.0Moderate
174.0Moderate
184.0Moderate
193.9Moderate
203.9Moderate
214.0Moderate
224.0Moderate
234.0Moderate
244.0Moderate
254.0Moderate
264.0Moderate
274.0Bright
284.0Bright
294.0Bright
304.0Bright
314.0Bright
Planning a trip in July

Hazard calendar for Dien Bien Phu

In seasonPeak

In July, Dien Bien Phu sits inside 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 July a good time to visit Dien Bien Phu?

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

3.4
Sightseeing
10th-best month of the year
3.7
Beach & pool
12th-best month of the year

July is a weaker month for outdoor sightseeing in Dien Bien Phu.

What to pack for Dien Bien Phu in July

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

In July, Dien Bien Phu sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

UV index in Dien Bien Phu in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 13 (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 July

GoodModeratePoorUnhealthyVery unhealthy

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