is a salutary reminder of the wisdom of the old local saying
Hasta el 40 de mayo no te quites el sayo
(roughly, don’t take off the pinny until the 40th of May)
It’s grey, cold, somewhat damp and flipping freezing. A nasty comedown from the 33ºC of the weekend.

In England it is “don’t cast a clot til May is out”. Debatable whether “May is month or tree/brush
Sorry meant “clout”