Climate
Sai Kung logs 105 hot days a year to Tuen Mun's 109 — Sai Kung wins by 4. Sai Kung also leads on sunny days by 6.
Sai Kung
Feels-like °C
Dinner outside
Tuen Mun
Feels-like °C
Dinner outside
Air Quality
Sai Kung averages 13.1 µg/m³ (moderate) PM2.5 annually versus Tuen Mun's 19.8 µg/m³ (sensitive-groups) — Sai Kung breathes ~34% cleaner air (6.7 µg/m³ lower).
Sai Kung
Tuen Mun
PM2.5 annual average
WHO classification
City Scale
Both maps at the same real-world scale — 1 cm on either map is the same distance.
Sai Kung (36K) and Tuen Mun (1.1M) are 30x in population — Tuen Mun is the larger metro, Sai Kung the smaller.
Tuen Mun is roughly 30x the scale of Sai Kung
Based on population (area data unavailable for some cities)
Tuen MunSai KungCity Scale Rankings
Tuen Mun1.1M30xSai Kung36K1xWho Thrives Here
Sai Kung is the stronger fit for the clean air seeker. Both cities work well for the winter escapist.
Also compared
Hong Kong Hong 
SingaporeFrequently asked about Sai Kung vs Tuen Mun
▶How does the climate compare between Sai Kung and Tuen Mun?
▶Should I move to Sai Kung or Tuen Mun?
The best city depends on what matters to you
This comparison shows how Sai Kung and Tuen Mun stack up on the data. But your climate preferences, budget, career needs, and lifestyle priorities can shift the picture entirely. A personalized diagnostic finds what fits your life.
Take the free diagnostic10 minutes, no account needed