Kasaoka
笠岡市
View of Kasaoka City
View of Kasaoka City
Flag of Kasaoka
Official seal of Kasaoka
Location of Kasaoka in Okayama Prefecture
Location of Kasaoka in Okayama Prefecture
Kasaoka is located in Japan
Kasaoka
Kasaoka
Location in Japan
Coordinates: 34°30′14″N 133°30′36″E / 34.50389°N 133.51000°E / 34.50389; 133.51000Coordinates: 34°30′14″N 133°30′36″E / 34.50389°N 133.51000°E / 34.50389; 133.51000
CountryJapan
RegionChūgoku (San'yō)
PrefectureOkayama Prefecture
Government
 • MayorNorimoto Mishima (current)
Area
 • Total136.03 km2 (52.52 sq mi)
Population
 (February 28, 2017)
 • Total50,160
 • Density370/km2 (960/sq mi)
Time zoneUTC+09:00 (JST)
City hall address1-1 Chūō, Kasaoka-shi, Okayama-ken
714-8601
ClimateCfa
Symbols
FlowerChrysanthemum
TreeGinkgo biloba

Kasaoka (笠岡市, Kasaoka-shi) is a city located in Okayama Prefecture, Japan. The city was founded on April 1, 1952. The municipal district also includes 31 outlying islands including seven inhabited islands in the Kasaoka Islands group.

As of February 28, 2017, the city has an estimated population of 50,160, with 22,446 households and a population density of 370 persons per km².[1] The total area is 136.03 km².

Geography

Climate

Kasaoka has a humid subtropical climate (Köppen climate classification Cfa). The average annual temperature in Kasaoka is 15.7 °C (60.3 °F). The average annual rainfall is 1,055.1 mm (41.54 in) with July as the wettest month. The temperatures are highest on average in August, at around 28.0 °C (82.4 °F), and lowest in January, at around 4.5 °C (40.1 °F).[2] The highest temperature ever recorded in Kasaoka was 38.0 °C (100.4 °F) on 5 August 2021; the coldest temperature ever recorded was −7.3 °C (18.9 °F) on 27 February 1981.[3]

Climate data for Kasaoka (1991−2020 normals, extremes 1979−present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 16.5
(61.7)
21.7
(71.1)
23.2
(73.8)
28.5
(83.3)
32.2
(90.0)
34.7
(94.5)
37.4
(99.3)
38.0
(100.4)
37.6
(99.7)
31.9
(89.4)
24.8
(76.6)
20.0
(68.0)
38.0
(100.4)
Average high °C (°F) 9.4
(48.9)
10.2
(50.4)
13.5
(56.3)
19.0
(66.2)
23.9
(75.0)
27.1
(80.8)
31.1
(88.0)
32.8
(91.0)
28.7
(83.7)
23.1
(73.6)
17.2
(63.0)
11.8
(53.2)
20.7
(69.2)
Daily mean °C (°F) 4.5
(40.1)
5.1
(41.2)
8.3
(46.9)
13.6
(56.5)
18.6
(65.5)
22.6
(72.7)
26.7
(80.1)
28.0
(82.4)
24.1
(75.4)
18.0
(64.4)
12.0
(53.6)
6.7
(44.1)
15.7
(60.2)
Average low °C (°F) 0.0
(32.0)
0.3
(32.5)
3.1
(37.6)
8.2
(46.8)
13.5
(56.3)
18.7
(65.7)
23.2
(73.8)
24.2
(75.6)
20.1
(68.2)
13.5
(56.3)
7.3
(45.1)
2.2
(36.0)
11.2
(52.2)
Record low °C (°F) −6.7
(19.9)
−7.3
(18.9)
−4.2
(24.4)
−1.7
(28.9)
3.6
(38.5)
10.4
(50.7)
15.8
(60.4)
16.7
(62.1)
9.1
(48.4)
2.5
(36.5)
−1.3
(29.7)
−4.3
(24.3)
−7.3
(18.9)
Average precipitation mm (inches) 33.0
(1.30)
41.6
(1.64)
76.6
(3.02)
81.2
(3.20)
102.7
(4.04)
160.7
(6.33)
172.9
(6.81)
80.0
(3.15)
129.2
(5.09)
87.5
(3.44)
50.2
(1.98)
39.6
(1.56)
1,055.1
(41.54)
Average precipitation days (≥ 1.0 mm) 4.7 6.5 8.7 8.5 8.7 10.5 9.4 6.9 8.3 6.9 5.8 5.6 90.5
Mean monthly sunshine hours 150.1 146.3 181.8 196.9 212.0 162.3 194.1 224.5 167.8 172.1 152.5 150.1 2,110.5
Source: Japan Meteorological Agency[3][2]

Demographics

Per Japanese census data, the population of Kasaoka in 2020 is 46,088 people.[4] Kasaoka has been conducting censuses since 1950.

Historical population
YearPop.±%
1950 75,372—    
1955 73,552−2.4%
1960 68,987−6.2%
1965 63,778−7.6%
1970 62,405−2.2%
1975 63,413+1.6%
1980 61,917−2.4%
1985 60,598−2.1%
1990 59,619−1.6%
1995 60,478+1.4%
2000 59,300−1.9%
2005 57,272−3.4%
2010 54,256−5.3%
2015 50,568−6.8%
2020 46,088−8.9%
Kasaoka population statistics[4]

Landmarks and local cultural facilities

Crime and safety

The Asano-gumi yakuza syndicate is based in Kasaoka. The Asano-gumi is the only designated yakuza group based in Okayama Prefecture.[6]

Sister cities

Kasaoka is twinned with:[7]

References

  1. ^ "Official website of Kasaoka city" (in Japanese). Japan: Kasaoka City. Retrieved 12 April 2017.
  2. ^ a b 気象庁 / 平年値(年・月ごとの値). JMA. Retrieved May 2, 2022.
  3. ^ a b 観測史上1~10位の値(年間を通じての値). JMA. Retrieved May 2, 2022.
  4. ^ a b Kasaoka population statistics
  5. ^ "Kasaoka Municipal Horseshoe Crab Museum". Kasaoka Tourism Foundation. Retrieved 23 June 2016.
  6. ^ "2010 Police White Paper Chapter 2 : Furtherance of Organized Crime Countermeasures", 2010, National Police Agency (in Japanese)
  7. ^ "友好握手都市<コタバル市(マレーシア)/モービィロンガコミューン(スウェーデン)>". Kasaoka City Official Website. Archived from the original on 21 December 2015. Retrieved 7 October 2011.