Dien Bien Phu, Vietnam

Full City Profile

84,672 Population 3,413/sq mi density

1,591 ft Elevation 485 meters

70°F Avg Temperature 21°C

Dien Bien Phu enjoys a temperate climate with an average annual temperature of 70°F (21°C). Winters average 60°F in January while summers reach 76°F in July. The area gets 225 sunny days per year. Annual precipitation totals 70.4 inches. The area receives 0.0 inches of snow annually.

Temperature

60°F Jan (15°C) 76°F Jul (25°C)

Annual Average	69.9°F
	29% above US avg
January Average	60°F (15°C)
July Average	76°F (25°C)
Sunny Days	225 days/yr

Geography

Elevation	1,591 ft (485 m)
Area	24.8 sq mi (64.3 km²)
Population Density	3,413/sq mi
Coordinates	21.3860°N, 103.0230°W
Timezone	Asia/Bangkok

Precipitation & Snow

Annual Rainfall 70.4"

85% above US avg

Snowfall 0.0"

Wettest Month (Jul) 18.50"

Driest Month (Jan) 0.24"

Air Quality

Earthquake History

39 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.9. Most recent: M4.5 on May 16, 2025.

Feb 19, 2001	31 km W of Dien Bien Phu, Vietnam	M4.9	32 km
Apr 3, 2003	83 km S of Dien Bien Phu, Vietnam	M4.7	84 km
Jan 14, 2019	51 km SW of Phôngsali, Laos	M4.6	130 km
Mar 29, 1993	53 km N of Dien Bien Phu, Vietnam	M4.6	54 km
Jul 19, 2014	19 km NNE of S?n La, Vietnam	M4.6	99 km
May 2, 2007	73 km S of Dien Bien Phu, Vietnam	M4.5	74 km
Apr 22, 2016	37 km NE of Phôngsali, Laos	M4.5	92 km
Jun 16, 2020	100 km NNE of Phôngsali, Laos	M4.5	128 km
Oct 6, 1991	33 km E of S?n La, Vietnam	M4.5	125 km
Apr 12, 2002	94 km NE of Phôngsali, Laos	M4.5	116 km
Feb 24, 2016	55 km WSW of Sa Pa, Vietnam	M4.5	96 km
May 16, 2025	27 km S of Mường Lay, Vietnam	M4.5	42 km
Mar 4, 2001	10 km WSW of Dien Bien Phu, Vietnam	M4.5	10 km
Apr 2, 2001	74 km WSW of Sa Pa, Vietnam	M4.4	83 km
Sep 19, 1993	52 km NNW of Phôngsali, Laos	M4.4	139 km
Mar 14, 2022	76 km SSE of Dien Bien Phu, Vietnam	M4.4	77 km
May 22, 2009	25 km SSE of Phôngsali, Laos	M4.4	82 km
Oct 5, 2009	54 km NNW of Phôngsali, Laos	M4.4	144 km
Mar 30, 1993	55 km N of Dien Bien Phu, Vietnam	M4.4	56 km
Jan 10, 2019	52 km SW of Phôngsali, Laos	M4.4	130 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

1 hurricane (Cat 1+) within 500 km since 1980. Strongest: Category 1.

Year	Name	Category	Closest
2024	Yagi	Category 1	281 km

Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	60°F (15°C)	0.2 in	Coldest, Driest
February	63°F (17°C)	1.6 in
March	68°F (20°C)	1.4 in
April	73°F (23°C)	4.3 in
May	75°F (24°C)	8.0 in
June	77°F (25°C)	11.7 in	Warmest
July	76°F (25°C)	18.5 in	Wettest
August	76°F (24°C)	16.2 in
September	75°F (24°C)	5.1 in
October	71°F (22°C)	2.3 in
November	65°F (19°C)	0.7 in
December	60°F (16°C)	0.4 in

Dien Bien Phu has a seasonal temperature swing of 17°F / from 60°F in January to 77°F in June. Total annual precipitation is 70.4 inches, with July being the wettest month (18.5") and January the driest (0.2").

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