GuardTrails
What it means
Escaping the heat is not a question of latitude. Ladakh in August sits at fifteen to twenty degrees by day (climate order of magnitude), and lies further south than Seville (geographic fact). Namibia in July is mild and dry, in the opposite hemisphere.
What decides is not where you go. It is the temperature beyond which your day stops. Every household has one, and most people know theirs without having put it into words: it is the last summer you stopped going out in the afternoon.
How to find yours: What is your heat ceiling?.
How it is measured
The ceiling translates not into comfort but into time you can actually use — what is left of a day once the heat has been taken out.
In Utah in summer, we walked from six to eleven in the morning, then hid (our trips). The hiking day had been cut in half. Under a Nordic sky, by contrast, it stays light so late that you can set off again after dinner.
Heat takes hours away from the day. Rain does not do so mechanically: it makes you look at when it falls — that is what rain hours are about.
To read the rain before you book: Rain days or rain hours?.
An example
Our ceiling is around twenty-four degrees (our trips). Above it, we no longer walk in the afternoon.
The consequence nobody anticipates: a long trip in a summer desert can contain less usable time than a shorter trip under a Nordic sky. Heat does not make a trip less pleasant, it makes it shorter. We paid for a month in the American West and used only part of it, and we will not go back in summer.
What it does not say
The ceiling says nothing about rain, wind or crowds. And ours is ours: yours is probably somewhere else. A valley and the pass next to it do not share a climate — check the exact spot before booking.