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Nagiso

南木曽町
Nagiso 南木曽町
Town
	Tsumago-juku in Nagiso
	Flag Seal
	Location of Nagiso in Nagano Prefecture
	Nagiso
	Coordinates: 35°36′13.2″N 137°36′31.8″E / 35.603667°N 137.608833°E
Country	Japan
Region	Chūbu (Kōshin'etsu)
Prefecture	Nagano
District	Kiso
Area
• Total	215.93 km2 (83.37 sq mi)
Population (April 2019)
• Total	4,111
• Density	19/km2 (49/sq mi)
Time zone	UTC+9 (Japan Standard Time)
Phone number	0264-57-2001
Address	3668-1 Yomikaki, Nagiso-machi, Kiso-gun, Nagano-ken 399-5301
Climate	Cfa/Dfa
Website	Official website
Symbols
Flower	Rhododendron
Tree	Chamaecyparis obtusa

Nagiso (南木曽町, Nagiso-machi) is a town located in Nagano Prefecture, Japan. As of 1 April 2019^[update], the town had an estimated population of 4,111 in 1751 households,^[1] and a population density of 19 persons per km². The total area of the town was 215.93 square kilometres (83.37 sq mi). Nagiso is listed as one of The Most Beautiful Villages in Japan.^[2]

Geography

Nagiso is located in the Kiso Valley of southwestern Nagano Prefecture, bordered by Gifu Prefecture to the west. The Kiso River flows through the center of the town.

Surrounding municipalities

Gifu Prefecture
- Nakatsugawa
Nagano Prefecture
- Achi
- Iida
- Ōkuwa

Climate

The town has a climate characterized by characterized by hot and humid summers, and cold winters (Köppen climate classification Cfa). The average annual temperature in Nagiso is 11.5 °C (52.7 °F). The average annual rainfall is 2,381.2 mm (93.75 in) with July as the wettest month. The temperatures are highest on average in August, at around 23.5 °C (74.3 °F), and lowest in January, at around −0.6 °C (30.9 °F).^[3]

Climate data for Nagiso (1991−2020 normals, extremes 1978−present)
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Record high °C (°F)	14.4 (57.9)	18.6 (65.5)	22.8 (73.0)	27.7 (81.9)	30.7 (87.3)	33.0 (91.4)	35.6 (96.1)	35.7 (96.3)	34.0 (93.2)	29.5 (85.1)	22.5 (72.5)	20.8 (69.4)	35.7 (96.3)
Mean daily maximum °C (°F)	4.6 (40.3)	6.4 (43.5)	11.3 (52.3)	17.3 (63.1)	22.1 (71.8)	24.9 (76.8)	28.3 (82.9)	30.0 (86.0)	25.9 (78.6)	20.0 (68.0)	13.7 (56.7)	7.2 (45.0)	17.6 (63.8)
Daily mean °C (°F)	−0.6 (30.9)	0.4 (32.7)	4.6 (40.3)	10.2 (50.4)	15.2 (59.4)	19.0 (66.2)	22.6 (72.7)	23.5 (74.3)	19.8 (67.6)	13.7 (56.7)	7.5 (45.5)	1.9 (35.4)	11.5 (52.7)
Mean daily minimum °C (°F)	−4.5 (23.9)	−4.3 (24.3)	−0.7 (30.7)	4.2 (39.6)	9.5 (49.1)	14.6 (58.3)	18.7 (65.7)	19.5 (67.1)	15.8 (60.4)	9.5 (49.1)	3.2 (37.8)	−1.8 (28.8)	7.0 (44.6)
Record low °C (°F)	−14.0 (6.8)	−15.3 (4.5)	−11.5 (11.3)	−5.0 (23.0)	−0.3 (31.5)	5.9 (42.6)	11.8 (53.2)	12.3 (54.1)	5.3 (41.5)	−1.2 (29.8)	−4.2 (24.4)	−10.6 (12.9)	−15.3 (4.5)
Average precipitation mm (inches)	107.5 (4.23)	113.8 (4.48)	182.1 (7.17)	181.0 (7.13)	203.3 (8.00)	298.9 (11.77)	365.8 (14.40)	245.9 (9.68)	264.1 (10.40)	186.2 (7.33)	129.2 (5.09)	111.6 (4.39)	2,381.2 (93.75)
Average precipitation days (≥ 1.0 mm)	11.9	9.8	12.2	11.8	12.1	15.5	16.6	13.7	13.1	11.1	9.6	12.0	149.4
Mean monthly sunshine hours	130.6	142.4	168.8	182.9	193.2	148.1	152.8	179.9	146.8	154.8	138.9	130.1	1,872.7
Source: Japan Meteorological Agency^[4]^[3]

History

The area of present-day Nagiso was part of ancient Shinano Province. During the Edo period, the area developed as series of post stations on the Nakasendō highway connecting Edo with Kyoto. The villages of Yomikaki, Tsumagoi and Tadachi merged to form the town of Nagiso on May 1, 1968.

Demographics

Per Japanese census data,^[5] the population of Nagiso has remained declined rapidly over the past 60 years.

Historical population
Year	Pop.	±%
1940	8,551	—
1950	10,258	+20.0%
1960	10,771	+5.0%
1970	8,020	−25.5%
1980	6,680	−16.7%
1990	6,142	−8.1%
2000	5,687	−7.4%
2010	4,810	−15.4%
2020	3,915	−18.6%

Education

Nagiso has one public elementary schools and one public middle school operated by the town government, and one high school operated the Nagano Prefectural Board of Education.