01 · Climate
Why humid heat feels worse
Humidity · Urban Heat Island
Sticky skin, heavy limbs, and thirst in humid air often mean sweat evaporates slowly, so heat stays on the skin. Singapore relative humidity commonly ranges about 55% to 95%, and can approach 100% in prolonged rain.
- Urban Heat Island: buildings, roads, and waste heat from traffic and industry trap warmth and raise daytime temperatures.
- Humidity stack: when the air cannot take more vapour, perspiration slows and sticky heat builds faster during light activity.
- Same weather, different lean: Heaty, Dampness-Heat, and Deficiency constitutions carry that outdoor load differently.