UK has weather changing capacity?

So I was always taught we are on an island surrounded by water and when it's hot, you get lots of steam, that steam then goes up, becomes heavy clouds and we get lots of rain. That's the reason rain is like a national sign. That was the case for the last 2 years when mainland EU was baking in 40 degrees, London was chilling max at 20, even with less rain but the clouds were covering us like protection. Then the new King comes and this year government's approved "scientists" tell me the Sun's heat has nothing to do with how hot our air becomes, water around us suddenly stops producing steam from heat and clouds become waterless... Am I trippin?