Yachiyo
Japan · 21K
Lifestyle Calendar
When this city supports your activity — and when it fights you.
Yachiyo
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: 7% viability
7Apr: 31% viability
31May: 68% viability
68Jun: 80% viability
80Jul: 77% viability
77Aug: 80% viability
80Sep: 79% viability
79Oct: 58% viability
58Nov: 20% viability
20Dec: 0% viability
0Cold
Friction Breakdown
Heat
Cold
Wind
Rain
Humid
Air Q.
Best months: Jun–SepChallenging: 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.
Yachiyo
Japan
Annual Average
FairWHO annual classification
13.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1010 µg/m³ — Fair
1313 µg/m³ — Fair
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1717 µg/m³ — Moderate
1818 µg/m³ — Moderate
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1313 µg/m³ — Fair
1010 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
1010 µg/m³ — Fair
1313 µg/m³ — Fair
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1717 µg/m³ — Moderate
1818 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1313 µg/m³ — Fair
1010 µg/m³ — Fair
Best months: Jan, Sep, DecWorst months: Apr–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.
Yachiyo
Japan
Annual Summary
Sunshine
2,111hrs/yr
Clear sky
45%
Worst month
3.7hrs/day
Vit D months
7.2months
UV 8+ days
20days/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
8.98.9 hrs — Sunny
8.98.9 hrs — Sunny
9.89.8 hrs — Sunny
8.88.8 hrs — Sunny
8.08.0 hrs — Good
9.09.0 hrs — Sunny
9.69.6 hrs — Sunny
7.97.9 hrs — Good
6.46.4 hrs — Good
7.77.7 hrs — Good
8.18.1 hrs — Sunny
Jan
Feb
Mar
Apr
May
Jun
7.97.9 hrs — Good
8.98.9 hrs — Sunny
8.98.9 hrs — Sunny
9.89.8 hrs — Sunny
8.88.8 hrs — Sunny
8.08.0 hrs — Good
Jul
Aug
Sep
Oct
Nov
Dec
9.09.0 hrs — Sunny
9.69.6 hrs — Sunny
7.97.9 hrs — Good
6.46.4 hrs — Good
7.77.7 hrs — Good
8.18.1 hrs — Sunny
Best months: Apr, Jul–AugWorst months: Sep–Nov
GoodSunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●