Rain please!

One of the upsides to living here is the weather. Well, usually! For weeks now we've been expecting/hoping for rain. Yes, I know - if you live in UK you can't understand why we're complaining, can you?
But we've only had a few showers since this time last year, and precipitation is our only water supply. If we get rain near sea-level it falls as snow on Mt Teide which filters through to underground aquifiers.
So while the UK is apparently about to have a heat wave, can we please have your rain?