Barcelona in July

July in Barcelona is 24.5 °C by day and 25.1 °C in the sea. Load is 4 out of 4, the same as in August and September: summer here is long.

July is useful as a heat test, and what needs testing is the flat rather than the street. Twenty-four and a half degrees is the daily mean rather than the afternoon peak, and in a building without air conditioning with west-facing windows the difference tells. It also tests what people remember too late: whether the lift works during outages, whether the courtyard has shade, how stuffy the bedroom is at night. None of that can be learned in winter.