The question in reverse
You know when.
Find where.
The rest of the site answers “when should I visit this place”. This asks the other way round: name a month and the weather you want, and see which places actually recorded it. Every list is drawn from the same 1991–2020 station normals, one place per station.
Start from a month
Every condition at once, for one month of the year.
Where is it warm but not baking…
Daytime highs of 20–27°C with under 80 mm of rain — the range most people mean by “good weather”.
Where is it cool…
Daytime highs of 5–16°C, for escaping a northern summer or avoiding heat.
Where is it dry…
Under 20 mm of rain across no more than four wet days, and mild enough to be outside.
Where is it beach-type weather…
Scoring 70 or better against the beach profile — warm days, mild nights, little rain. This measures the weather, not the coastline: the index holds no record of which places have a beach, so inland cities qualify on climate alone.