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Data Source: Safety, crime, and quality metrics are sourced from Numbeo, a crowd-sourced global database of reported data.
All scores are relative comparisons on a 0-100 scale, where 50 = global average. Higher scores mean better than average, lower scores mean worse than average.
Karuizawa offers a tranquil, nature-immersed lifestyle, a refreshing escape from Japan's bustling metropolises. Ideal for those prioritizing outdoor pursuits, clean air, and a slower pace, it provides a high quality of life in a remarkably safe environment.
Healthcare access is reliable, and while public transport connects you well to major hubs, navigating daily life within this charming resort town often benefits from personal transport. While its smaller, more integrated community offers a unique experience, expats seeking a large, established international network might find it less prominent here.
Population
20,023
Area
30 km²
Density
677 per km²
Founded
-
Language
Japanese
Distance to Coast
124 km
AI-generated
Districts & Neighborhoods in Karuizawa
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AI-generated
Climate & Weather in Karuizawa
Karuizawa has a **humid continental climate** (Köppen **Dfb**) with warm, wet summers and cold, snowy winters. Long-term climate data show an annual mean temperature around 8–9°C, annual precipitation around 1,200–1,250 mm, and high humidity, with frequent fog and the wettest conditions in summer and early autumn. Current weather can be much warmer than average in summer, but the long-term pattern remains cool-temperate and moisture-rich.
Summer Average
24°C
Winter Average
-1°C
Climate Type
Humid Continental
Rainy Days
110
Sunny Days
180
Humidity
79%
Spring
March - May
1-18°C
Spring is cool at first and turns mild by May, with a steady warming trend and frequent rain or lingering snow early in the season. Fog can occur often, especially in the highland setting.
Moderate rainfall
Summer
June - August
16-26°C
Summer is pleasantly warm rather than hot, with average highs in the mid-20s°C and frequent showers or thunderstorms. It is the wettest part of the year, and humidity is high.
High rainfall
Autumn
September - November
4-21°C
Autumn is crisp and comfortable, with cool mornings and a gradual drop into colder weather by late November. Rainfall remains meaningful in early autumn before drier conditions arrive later.
Moderate rainfall
Winter
December - February
-10-3°C
Winter is cold and snowy, with frequent subfreezing nights and chilly daytime temperatures. Clearer, drier spells are common, but snowfall and frost are regular features.
Moderate rainfall
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Air Quality
Karuizawa
Advantages
Karuizawa
Mountain resort natural beauty
911 parks for recreation
Peaceful small-town atmosphere
Excellent seasonal activities
Fresh air and nature
Disadvantages
Karuizawa
Limited job opportunities locally
Harsh winter weather conditions
Aging population, fewer young people
Car dependency, limited public transit
Seasonal tourism creates congestion
Safety & Security in Karuizawa
Overall Safety Score
Includes resilience and environmental factors
Moderate
55
/100
Japan Avg
65
Asia Avg
59
Worldwide Avg
59
Crime & Safety Metrics
Thermometer compares Karuizawa to Japan averages using different marker styles.Compare:
Karuizawa
Japan Average
No city-specific data available — showing Japan country averages instead.
Safety Index
0510
Good
Safety from Crime
0510
Safe
Safe Alone (Day)
0510
Good
Safe Alone (Night)
0510
Good
Safety from Violent Crime
0510
Safe
Safety from Property Crime
0510
Safe
Environmental & Natural Hazard Risks
Resilience Score: 97/100
No data for Karuizawa — showing hazard indicators from nearby Takasaki (~33 km).
