It is possible to find load of climatological information on all sorts of countries and cities, but ...
... what I'd like to find: given a certain temperature wanted, an amount of rainfall wanted, what regions have this climate?
Example:
I'd like to know which regions (in Europe) have an average daytime temperature between 24°C and 30°C, average less than 20 mm rainfall in the month of July?
And I would prefer a (geographically) detailed answer. Not: "France" and "Greece", but "the Southern coast of France", "the Greek islands", ...