Here's the short version of what heat and humidity do to your face. Oil glands work overtime. Sweat lingers on the surface. Pores read as larger, and clogged-up breakouts flare. Then there's the sun — long days, high UV, and yes, the UV is still high on a gray rainy afternoon.
That last bit drives everything. Strong UV is the main reason a summer treatment plan looks nothing like a winter one. When your skin is taking a daily hit of ultraviolet, certain aggressive procedures get riskier — more chance of pigment going sideways, slower and messier healing. So the seasonal logic is dead simple: gentle, hydrating, preventive work now; heavy resurfacing later, when UV drops. But none of this is universal. Your skin type, your history, your goals — those decide what's appropriate, and that's a conversation for a dermatologist, not a blog.