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Lai Châu () is a city in the Northwest region of Vietnam. It is the capital city of Lai Châu Province. The city borders Phong Thổ District, Sìn Hồ District và Tam Đường District.
Lai Châu
Thành phố Lai Châu | |
|---|---|
| Lai Châu City | |
 Lai Châu City Lake | |
 | |
  Lai Châu Location in Vietnam | |
| Coordinates: 22°23′57″N 103°26′21″E / 22.39917°N 103.43917°E | |
| Country |  Vietnam |
| Province | Lai Châu |
| Established town | 10 October 2004 |
| Established city | 27 December 2013 |
| Area | |
| • Total | 92.37 km2 (35.66 sq mi) |
| Population (2020)[1] | |
| • Total | 42,973 |
| • Density | 470/km2 (1,200/sq mi) |
| Time zone | UTC+7 (Indochina Time) |
| Climate | Cwa |
| Website | thanhpho |
History
editLai Châu, or Muang Lay (Vietnamese: Mường Lay) was the seat of lords of the White Tai who were dominant over other Thai peoples of the area, though there was rivalry between the White Tai rulers of Muang Lay and Muang So.[2] During the 1870s Muang Lay was the base of lord Đèo Văn Trị of the White Tai who sought to unite and become chief of the 12 mường (Sino-Vietnamese: Châu / 州) making up the Sip Song Chau Tai. This he partially achieved, with the help first of the Chinese Black Flags, then later the French. His authority, and the autonomy of the area, was recognised by the French in 1890.
Demographics
editAs of 2020 the city had a population of 42,973, covering an area of 92.37 km².[1]
Administrative divisions
editLai Châu City is officially divided into 7 commune-level sub-divisions, including 5 wards (Đoàn Kết, Đông Phong, Quyết Thắng, Quyết Tiến, Tân Phong) and 2 rural communes (San Thàng, Sùng Phài).[1]
Climate
editLai Châu has a humid subtropical climate (Köppen Cwa), typical for northwestern Vietnam, with hot, oppressively humid, and wet summers and warm to very warm, dry winters.
| Climate data for Lai Châu | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 34.3 (93.7) |
38.0 (100.4) |
39.6 (103.3) |
41.9 (107.4) |
42.5 (108.5) |
39.8 (103.6) |
39.8 (103.6) |
38.9 (102.0) |
37.0 (98.6) |
36.4 (97.5) |
34.3 (93.7) |
32.9 (91.2) |
42.5 (108.5) |
| Mean daily maximum °C (°F) | 23.4 (74.1) |
26.2 (79.2) |
29.9 (85.8) |
32.5 (90.5) |
32.8 (91.0) |
31.8 (89.2) |
31.4 (88.5) |
32.1 (89.8) |
32.0 (89.6) |
30.0 (86.0) |
26.6 (79.9) |
23.6 (74.5) |
29.4 (84.9) |
| Daily mean °C (°F) | 17.2 (63.0) |
18.9 (66.0) |
22.1 (71.8) |
24.9 (76.8) |
26.4 (79.5) |
26.7 (80.1) |
26.5 (79.7) |
26.7 (80.1) |
26.1 (79.0) |
24.0 (75.2) |
20.6 (69.1) |
17.5 (63.5) |
23.1 (73.6) |
| Mean daily minimum °C (°F) | 13.8 (56.8) |
14.7 (58.5) |
17.2 (63.0) |
20.3 (68.5) |
22.5 (72.5) |
23.9 (75.0) |
23.9 (75.0) |
23.8 (74.8) |
22.8 (73.0) |
20.5 (68.9) |
17.4 (63.3) |
14.2 (57.6) |
19.6 (67.3) |
| Record low °C (°F) | 3.4 (38.1) |
7.1 (44.8) |
8.1 (46.6) |
12.9 (55.2) |
14.1 (57.4) |
18.2 (64.8) |
20.1 (68.2) |
19.1 (66.4) |
16.4 (61.5) |
10.0 (50.0) |
7.5 (45.5) |
3.6 (38.5) |
3.4 (38.1) |
| Average rainfall mm (inches) | 31.4 (1.24) |
33.2 (1.31) |
62.3 (2.45) |
137.7 (5.42) |
276.8 (10.90) |
426.7 (16.80) |
478.7 (18.85) |
363.5 (14.31) |
150.8 (5.94) |
86.1 (3.39) |
52.4 (2.06) |
27.2 (1.07) |
2,126.6 (83.72) |
| Average rainy days | 5.1 | 4.8 | 7.5 | 13.0 | 19.4 | 23.7 | 25.2 | 21.6 | 13.0 | 9.4 | 6.7 | 5.3 | 154.8 |
| Average relative humidity (%) | 80.6 | 76.4 | 74.5 | 76.5 | 79.9 | 85.3 | 87.0 | 86.0 | 84.0 | 83.8 | 83.8 | 83.1 | 81.7 |
| Mean monthly sunshine hours | 129.4 | 148.2 | 179.3 | 198.2 | 178.1 | 118.0 | 123.3 | 152.2 | 162.7 | 151.6 | 140.7 | 131.1 | 1,823.6 |
| Source: Vietnam Institute for Building Science and Technology[3] | |||||||||||||
| Climate data for Tam Dương District, Lai Châu, elevation 900 m (3,000 ft) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 28.7 (83.7) |
31.2 (88.2) |
34.0 (93.2) |
34.7 (94.5) |
34.5 (94.1) |
32.4 (90.3) |
32.7 (90.9) |
33.4 (92.1) |
32.2 (90.0) |
31.0 (87.8) |
29.5 (85.1) |
28.0 (82.4) |
34.7 (94.5) |
| Mean daily maximum °C (°F) | 18.8 (65.8) |
21.0 (69.8) |
24.4 (75.9) |
27.0 (80.6) |
27.5 (81.5) |
27.0 (80.6) |
26.8 (80.2) |
27.5 (81.5) |
27.0 (80.6) |
25.1 (77.2) |
22.1 (71.8) |
19.3 (66.7) |
24.5 (76.0) |
| Daily mean °C (°F) | 13.6 (56.5) |
15.4 (59.7) |
18.7 (65.7) |
21.4 (70.5) |
22.7 (72.9) |
23.1 (73.6) |
22.9 (73.2) |
23.1 (73.6) |
22.2 (72.0) |
20.2 (68.4) |
16.9 (62.4) |
13.9 (57.0) |
19.5 (67.1) |
| Mean daily minimum °C (°F) | 10.1 (50.2) |
11.4 (52.5) |
14.3 (57.7) |
17.2 (63.0) |
19.3 (66.7) |
20.7 (69.3) |
20.6 (69.1) |
20.4 (68.7) |
19.2 (66.6) |
17.0 (62.6) |
13.5 (56.3) |
10.3 (50.5) |
16.2 (61.2) |
| Record low °C (°F) | 0.8 (33.4) |
3.2 (37.8) |
2.9 (37.2) |
7.9 (46.2) |
11.9 (53.4) |
15.0 (59.0) |
16.9 (62.4) |
17.0 (62.6) |
12.7 (54.9) |
7.2 (45.0) |
4.0 (39.2) |
−0.4 (31.3) |
−0.4 (31.3) |
| Average rainfall mm (inches) | 40.1 (1.58) |
39.0 (1.54) |
81.2 (3.20) |
185.1 (7.29) |
340.4 (13.40) |
472.5 (18.60) |
545.2 (21.46) |
340.0 (13.39) |
186.2 (7.33) |
131.9 (5.19) |
75.3 (2.96) |
35.1 (1.38) |
2,469 (97.20) |
| Average rainy days | 7.2 | 7.0 | 8.4 | 14.0 | 21.9 | 25.2 | 26.3 | 23.0 | 16.3 | 12.5 | 8.2 | 5.1 | 175.0 |
| Average relative humidity (%) | 81.2 | 77.0 | 73.0 | 75.9 | 81.3 | 87.2 | 89.0 | 87.6 | 86.0 | 84.3 | 82.3 | 81.7 | 82.2 |
| Mean monthly sunshine hours | 161.5 | 167.0 | 189.3 | 204.3 | 186.4 | 114.5 | 117.2 | 145.2 | 157.6 | 156.4 | 164.1 | 168.0 | 1,936.8 |
| Source: Vietnam Institute for Building Science and Technology[4] | |||||||||||||
References
edit- ^ a b c d "Nghị quyết số 866/NQ-UBTVQH14 năm 2020 về việc sắp xếp các đơn vị hành chính cấp huyện, cấp xã thuộc tỉnh Lai Châu". 2020-01-10.
- ^ Michael C. Howard, Kim Be Howard Textiles of the Daic peoples of Vietnam Page 75, 2002 "In general the White Tai nobles in the north were dominant, but even among them there was intense rivalry between the rulers of Muang Lay and Muang So. In the 1870s and 1880s Chinese bandits known as Haw (or Ho) moved into northern ..."
- ^ "Vietnam Institute for Building Science and Technology" (PDF).
- ^ "Vietnam Institute for Building Science and Technology" (PDF). Retrieved 16 August 2023.
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