Ratnapura
Sri Lanka · 66K
Lifestyle Calendar
When this city supports your activity — and when it fights you.
RatnapuraSri Lanka
Sri LankaDinner Outside6 – 10 pm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Verdict
Jan: 60% viability
60Feb: 61% viability
61Mar: 53% viability
53Apr: 62% viability
62May: 45% viability
45Jun: 61% viability
61Jul: 61% viability
61Aug: 67% viability
67Sep: 57% viability
57Oct: 49% viability
49Nov: 45% viability
45Dec: 58% viability
58Humid
Friction Breakdown
Heat
Cold
Wind
Rain
Humid
Air Q.
Best months: NoneChallenging: None
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025Confidence: ●●●
Air Quality Profile
Annual and monthly PM2.5 levels against WHO guidelines.
RatnapuraSri Lanka
Sri LankaAnnual Average
ModerateWHO annual classification
19.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2525 µg/m³ — Poor
2929 µg/m³ — Poor
3030 µg/m³ — Poor
2626 µg/m³ — Poor
1313 µg/m³ — Fair
1212 µg/m³ — Fair
1515 µg/m³ — Moderate
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
2323 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
2525 µg/m³ — Poor
2929 µg/m³ — Poor
3030 µg/m³ — Poor
2626 µg/m³ — Poor
1313 µg/m³ — Fair
1212 µg/m³ — Fair
Jul
Aug
Sep
Oct
Nov
Dec
1515 µg/m³ — Moderate
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
2323 µg/m³ — Moderate
Best months: May–Jun, AugWorst months: Feb–Apr
Fair10–15 µg/m³Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholdsConfidence: ●●●
Sun & UV Profile
Monthly sunshine, sky clarity, and UV exposure patterns.
RatnapuraSri Lanka
Sri LankaAnnual Summary
Sunshine
2,272hrs/yr
Clear sky
33%
Worst month
4.5hrs/day
Vit D months
11.5months
UV 8+ days
200days/yr
UV 11+ days
22days/yr
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Daily hrs
8.98.9 hrs — Sunny
9.69.6 hrs — Sunny
9.09.0 hrs — Sunny
9.39.3 hrs — Sunny
8.78.7 hrs — Sunny
9.79.7 hrs — Sunny
9.39.3 hrs — Sunny
9.99.9 hrs — Sunny
9.09.0 hrs — Sunny
8.38.3 hrs — Sunny
8.08.0 hrs — Good
8.78.7 hrs — Sunny
Jan
Feb
Mar
Apr
May
Jun
8.98.9 hrs — Sunny
9.69.6 hrs — Sunny
9.09.0 hrs — Sunny
9.39.3 hrs — Sunny
8.78.7 hrs — Sunny
9.79.7 hrs — Sunny
Jul
Aug
Sep
Oct
Nov
Dec
9.39.3 hrs — Sunny
9.99.9 hrs — Sunny
9.09.0 hrs — Sunny
8.38.3 hrs — Sunny
8.08.0 hrs — Good
8.78.7 hrs — Sunny
Best months: Feb, Jun, AugWorst months: Oct–Dec
GoodSunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●