It looks as though this vintage is running a fortnight to three weeks ahead of normal. I have found a reference to the harvest once starting on Sept 1st (2003) but Andy's report from Tedo is pulling that record back by a full week.
Although the Atlantic weather systems are still locked into their summer pattern, with the genesis of hurricanes still well to the south of Cape Verde; the local forecast is less settled, with a diet of sunshine and showers forecast for the next ten days. As the growers don't need a declaration from this vintage, I'm guessing their focus will be on playing safe. With the weather looking uncertain, I expect they'll pile headlong into this harvest and get the grapes in as soon as they are ripe enough.