Chiang Rai
Thailand · 122K
Lifestyle Calendar
When this city supports your activity — and when it fights you.
Chiang Rai
Thailand
Dinner Outside6 – 10 pm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Verdict
Jan: 82% viability
82Feb: 93% viability
93Mar: 95% viability
95Apr: 87% viability
87May: 72% viability
72Jun: 66% viability
66Jul: 61% viability
61Aug: 45% viability
45Sep: 61% viability
61Oct: 81% viability
81Nov: 92% viability
92Dec: 84% viability
84Humid
Friction Breakdown
Heat
Cold
Wind
Rain
Humid
Air Q.
Best months: Jan–May, Oct–DecChallenging: None
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025Confidence: ●●●
Air Quality Profile
Annual and monthly PM2.5 levels against WHO guidelines.
Chiang Rai
Thailand
Annual Average
PoorWHO annual classification
33.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
3737 µg/m³ — Unhealthy
3838 µg/m³ — Unhealthy
7171 µg/m³ — Very Unhealthy
4444 µg/m³ — Unhealthy
3030 µg/m³ — Poor
2323 µg/m³ — Moderate
2020 µg/m³ — Moderate
2020 µg/m³ — Moderate
2525 µg/m³ — Moderate
2828 µg/m³ — Poor
2727 µg/m³ — Poor
3333 µg/m³ — Poor
Jan
Feb
Mar
Apr
May
Jun
3737 µg/m³ — Unhealthy
3838 µg/m³ — Unhealthy
7171 µg/m³ — Very Unhealthy
4444 µg/m³ — Unhealthy
3030 µg/m³ — Poor
2323 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
2020 µg/m³ — Moderate
2020 µg/m³ — Moderate
2525 µg/m³ — Moderate
2828 µg/m³ — Poor
2727 µg/m³ — Poor
3333 µg/m³ — Poor
Best months: Jun–AugWorst months: Feb–Apr
Moderate15–25 µg/m³Poor25–35 µg/m³Unhealthy35–50 µg/m³Very Unhealthy50–75 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholdsConfidence: ●●●
Sun & UV Profile
Monthly sunshine, sky clarity, and UV exposure patterns.
Chiang Rai
Thailand
Annual Summary
Sunshine
2,603hrs/yr
Clear sky
49%
Worst month
3.7hrs/day
Vit D months
11.5months
UV 8+ days
114days/yr
UV 11+ days
7days/yr
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Daily hrs
9.29.2 hrs — Sunny
1111 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Sunny
9.59.5 hrs — Sunny
7.97.9 hrs — Good
8.78.7 hrs — Sunny
8.28.2 hrs — Sunny
8.88.8 hrs — Sunny
9.19.1 hrs — Sunny
Jan
Feb
Mar
Apr
May
Jun
9.29.2 hrs — Sunny
1111 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Very Sunny
1010 hrs — Sunny
Jul
Aug
Sep
Oct
Nov
Dec
9.59.5 hrs — Sunny
7.97.9 hrs — Good
8.78.7 hrs — Sunny
8.28.2 hrs — Sunny
8.88.8 hrs — Sunny
9.19.1 hrs — Sunny
Best months: Feb, Apr–MayWorst months: Aug–Oct
GoodSunnyVery Sunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●