There's an apocryphal story in São Paulo that women in Rio wear their fur coats when the temperature drops to 70°F.
Tod tells me when he was in his early twenties and came down to Biarritz he found the weather deeply depressing. Expecting to lie on the beach all day in glorious sunshine, most days low cloud swept in and hung around until late afternoon. Tough for tourists (like those yesterday in Leclerc, wearing most inappropriate clothing), but wonderful for locals who are able to get on with their lives in relative comfort.
We've had such a day here and I've gardened with pleasure all morning.
And the Cariocas in their fur coats? The difference between the 100°F of the last few days and the 70°F of this morning means that I've been wearing long trousers and a sweater.