Is Polyester Cooler Than Cotton?

October 10, 2025

Choosing the right fabric matters for staying cool in hot weather. Here’s a concise breakdown of polyester vs. cotton, and their blend:

1. Polyester

Strength: A synthetic fabric with strong moisture-wicking abilities—it pulls sweat away from the skin, ideal for physical activity.
Weakness: Poor breathability; it traps heat near the body, making it less comfortable for all-day wear in heat.

2. Cotton

Strength: A natural fiber with excellent breathability—air flows freely to regulate body temperature. It’s highly absorbent, keeping you cool in hot, humid (or dry) casual settings.
Weakness: Holds moisture once soaked (e.g., from heavy sweat), becoming heavy and clingy, so it’s less ideal for high-intensity activity.

3. Polyester-Cotton Blends: A Compromise

Combines cotton’s breathability with polyester’s moisture-wicking. It’s more durable, wrinkle-resistant, and dries faster than pure cotton—versatile for casual or active use.

Verdict

Casual hot-weather wear: Cotton is cooler, thanks to better breathability.
Physical activity: Polyester works better for managing sweat.
Balance: Polyester-cotton blends offer comfort, practicality, and moisture control for mixed needs.