Where to go, month by month

Pick a month and this guide ranks the hundred places we cover on what the weather records actually say about it: afternoon temperature, night temperature, and how many days of the month see more than a millimetre of rain. The same formula is applied to every place, so the twelve pages can be read against each other. Each one also names the places to skip that month, and says why — too wet, too hot, too cold. None of it predicts your holiday; it reports what the last few years measured.

How the score is calculated

One formula, applied identically to the hundred places, on measured station records:

score = 100 − 3·max(0, |tMax − 25| − 3) − 4·max(0, rainyDays1 − 6) − 2·max(0, 12 − tMin)

A place is flagged as one to avoid when it records 14 rainy days or more in the month, an average high of 34 °C or more, or an average high of 8 °C or less. Only the five lowest-scoring flagged places are listed.