If you sweat easily, it means your body is well adapted to heat and working out. That's the PROPER response to elevated heat.
The way to avoid it is to work less. Thermodynamics man. You work, heat is generated. You get hot, you sweat.

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I use a heart rate monitor, to keep me in a relaxed zone. For me, that doesn't slow me down much. The free method of doing this is to pay attention to how hard you are breathing, and keep it relaxed.

Wool is anti-bacterial. I'm wearing light merino or cashmere wool if it is less than 80 degrees because it can get wet without getting stinky.