Jaffna
Sri Lanka · 199K
Lifestyle Calendar
When this city supports your activity — and when it fights you.
Jaffna
Sri Lanka
Dinner Outside6 – 10 pm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Verdict
Jan: 76% viability
76Feb: 83% viability
83Mar: 94% viability
94Apr: 87% viability
87May: 35% viability
35Jun: 11% viability
11Jul: 27% viability
27Aug: 34% viability
34Sep: 23% viability
23Oct: 52% viability
52Nov: 40% viability
40Dec: 47% viability
47Humid
Friction Breakdown
Heat
Cold
Wind
Rain
Humid
Air Q.
Best months: Jan–AprChallenging: May–Sep
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025Confidence: ●●●
Air Quality Profile
Annual and monthly PM2.5 levels against WHO guidelines.
Jaffna
Sri Lanka
Annual Average
ModerateWHO annual classification
17.4µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1919 µg/m³ — Moderate
2323 µg/m³ — Moderate
2323 µg/m³ — Moderate
1919 µg/m³ — Moderate
1313 µg/m³ — Fair
1313 µg/m³ — Fair
1313 µg/m³ — Fair
1414 µg/m³ — Fair
1414 µg/m³ — Fair
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
2424 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
1919 µg/m³ — Moderate
2323 µg/m³ — Moderate
2323 µg/m³ — Moderate
1919 µg/m³ — Moderate
1313 µg/m³ — Fair
1313 µg/m³ — Fair
Jul
Aug
Sep
Oct
Nov
Dec
1313 µg/m³ — Fair
1414 µg/m³ — Fair
1414 µg/m³ — Fair
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
2424 µg/m³ — Moderate
Best months: May–JulWorst months: Feb–Mar, Dec
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.
Jaffna
Sri Lanka
Annual Summary
Sunshine
2,546hrs/yr
Clear sky
42%
Worst month
3.9hrs/day
Vit D months
11.5months
UV 8+ days
259days/yr
UV 11+ days
63days/yr
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Daily hrs
9.49.4 hrs — Sunny
9.99.9 hrs — Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Sunny
1010 hrs — Sunny
9.29.2 hrs — Sunny
9.19.1 hrs — Sunny
8.08.0 hrs — Good
8.98.9 hrs — Sunny
Jan
Feb
Mar
Apr
May
Jun
9.49.4 hrs — Sunny
9.99.9 hrs — Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
Jul
Aug
Sep
Oct
Nov
Dec
1010 hrs — Sunny
1010 hrs — Sunny
9.29.2 hrs — Sunny
9.19.1 hrs — Sunny
8.08.0 hrs — Good
8.98.9 hrs — Sunny
Best months: Apr–JunWorst months: Oct–Dec
GoodSunnyVery Sunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●