How to read the Barcelona forecast
A good forecast really works as three layers. The current panel tells you what it feels like outside right now, which in Barcelona often means factoring in humidity off the Mediterranean as much as the raw temperature, since a muggy 28°C in August feels quite different from a dry 28°C in May. The hourly strip is for planning the shape of your day around the city's brief but intense summer and autumn storms, which can arrive suddenly off the sea and clear again within the hour. The seven-day outlook is best used for the general trend across the week rather than as a precise daily promise, and it is most trustworthy in the first three or four days. For the latest Barcelona news alongside your forecast, see Daily Barcelona.