Chichibu
Japan · 61K
Lifestyle Calendar
When this city supports your activity — and when it fights you.
Chichibu
Japan
Dinner Outside6 – 10 pm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Verdict
Jan: 0% viability
0Feb: 0% viability
0Mar: 4% viability
4Apr: 24% viability
24May: 51% viability
51Jun: 60% viability
60Jul: 55% viability
55Aug: 63% viability
63Sep: 58% viability
58Oct: 40% viability
40Nov: 10% viability
10Dec: 0% viability
0Cold
Friction Breakdown
Heat
Cold
Wind
Rain
Humid
Air Q.
Best months: NoneChallenging: Jan–Apr, Nov–Dec
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025Confidence: ●●●
Air Quality Profile
Annual and monthly PM2.5 levels against WHO guidelines.
Chichibu
Japan
Annual Average
FairWHO annual classification
13.8µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1212 µg/m³ — Fair
1515 µg/m³ — Moderate
1515 µg/m³ — Fair
1313 µg/m³ — Fair
1717 µg/m³ — Moderate
1717 µg/m³ — Moderate
1313 µg/m³ — Fair
1515 µg/m³ — Moderate
1212 µg/m³ — Fair
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1212 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
1212 µg/m³ — Fair
1515 µg/m³ — Moderate
1515 µg/m³ — Fair
1313 µg/m³ — Fair
1717 µg/m³ — Moderate
1717 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
1313 µg/m³ — Fair
1515 µg/m³ — Moderate
1212 µg/m³ — Fair
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1212 µg/m³ — Fair
Best months: Jan, Oct, DecWorst months: Feb, May–Jun
Fair10–15 µg/m³Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholdsConfidence: ●●●
Sun & UV Profile
Monthly sunshine, sky clarity, and UV exposure patterns.
Chichibu
Japan
Annual Summary
Sunshine
2,200hrs/yr
Clear sky
43%
Worst month
4.1hrs/day
Vit D months
7.4months
UV 8+ days
23days/yr
UV 11+ days
0days/yr
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Daily hrs
7.97.9 hrs — Good
8.78.7 hrs — Sunny
9.09.0 hrs — Sunny
9.99.9 hrs — Sunny
9.69.6 hrs — Sunny
7.07.0 hrs — Good
8.48.4 hrs — Sunny
8.78.7 hrs — Sunny
8.08.0 hrs — Good
7.77.7 hrs — Good
7.97.9 hrs — Good
8.18.1 hrs — Sunny
Jan
Feb
Mar
Apr
May
Jun
7.97.9 hrs — Good
8.78.7 hrs — Sunny
9.09.0 hrs — Sunny
9.99.9 hrs — Sunny
9.69.6 hrs — Sunny
7.07.0 hrs — Good
Jul
Aug
Sep
Oct
Nov
Dec
8.48.4 hrs — Sunny
8.78.7 hrs — Sunny
8.08.0 hrs — Good
7.77.7 hrs — Good
7.97.9 hrs — Good
8.18.1 hrs — Sunny
Best months: Mar–MayWorst months: Jun, Oct–Nov
GoodSunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●