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Koshigaya

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Koshigaya Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Koshigaya year round climate

  • Spring (March–May): Average 49–65°F, mild climate but with relatively high rainfall, especially in April. Common activities: Flower viewing, hiking. Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): Average 71–82°F, hot and humid, with relatively high rainfall from June to August. Heatstroke prevention is necessary. Common activities: Swimming, outdoor activities (sun protection and rain gear needed). Recommended clothing: Light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): Average 64–56°F, pleasant and comfortable climate with gradually decreasing rainfall. Common activities: Maple viewing, outings. Recommended clothing: Light jacket, long-sleeved shirt.
  • Winter (December–February): Average 45–41°F, cold and dry with low rainfall. Common activities: Indoor activities, hot springs. Recommended clothing: Warm jacket, sweater, scarf, hat.

Koshigaya climatological average

Annual average temperature: approx. 60.8°F / Annual rainfall: approx. 1576 mm / Summer humidity: 70%–80% / Rainiest month: June

Koshigaya monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
39.9°F
34.1
February
41.5°F
68.6
March
49.8°F
134.3
April
59.2°F
157.5
May
65.1°F
191.9
June
72°F
238.6
July
81.3°F
116.6
August
82.9°F
196.6
September
78.1°F
182.6
October
64.8°F
136.4
November
56.1°F
90.2
December
45.5°F
29.2

Koshigaya weather for the next seven days

7/13
Monday
Smoky haze
82.4°F/79°F
7/14
Tuesday
Sunny
94°F/77.2°F
7/15
Wednesday
Sunny
93.6°F/79.9°F
7/16
Thursday
Partly Cloudy
95.6°F/81.1°F
7/17
Friday
Light rain shower
84.4°F/79.2°F
7/18
Saturday
Patchy rain nearby
87.5°F/76.7°F
7/19
Sunday
Patchy rain nearby
88.6°F/76.5°F

Koshigaya Frequently Asked Questions and Useful Information for Travel

Is Koshigaya a good place to live?

Koshigaya City offers high convenience with numerous large commercial facilities. However, potential residents should be aware of possible chronic traffic congestion and congestion around stations. It's also advisable to check hazard maps for disaster preparedness before moving.

What are the must-see attractions in Koshigaya?

Discover AEON Lake Town for a premier shopping experience, visit Hisaizu Shrine for spiritual reflection, and explore the serene Hanataen Garden. For outdoor fun, Shirakobato Water Park is a great option, and Campbelltown Forest of Wild Birds offers a natural escape.

What is the history of Koshigaya?

Koshigaya was formed as Koshigaya Town in 1954 through the merger of two towns and eight villages. It officially became a municipality in 1958. The connection of the Tokyo Metro Hibiya Line to the Tobu Skytree Line in 1962 significantly boosted its population growth.

What is the population of Koshigaya?

As of January 1, 2021, Koshigaya City had an estimated population of 345,353 residents residing in 158,022 households, resulting in a population density of approximately 5700 persons per square kilometer.

What kind of commercial facilities can be found in Koshigaya?

Koshigaya is known for its abundance of large commercial facilities, with AEON Lake Town being a prominent example, offering extensive shopping and entertainment options for visitors and residents alike.