Yes, that was my point exactly. Due to nice weather, ice cream consumption and drowning begin to correlate and it's hard to draw conclusions from this correlation alone.
As an example for coffee consumption it could just be that coffee is consumed more in countries with higher living standards and higher living standards lead to longer life. Coffee might not necessarily be healthy by itself, though of course it could very well be.
It also correlates with serial killers, because turns out no one likes to do their hobby in poor weather.