First 2 stages but especially stage 1 should be interesting.
Forecast for Gretna (approximately 2/3rds of the way into the stage) at 1pm is for heavy rain, poor visibility and south-westerly winds of 27mph (43kph) gusts up to 45 mph (72kph).
Once out of Gretna they turn to the west and then north-west along and out of the very exposed Solway Firth. They stay on a pretty much north-westerly orientation for the rest of the stage. Could be havoc in the crosswinds!
There could be big time losses of the first day if the forecast is anything to go by.
The forecast is for similar for Monday in the Lake District as well. The wind will turn to the west so the sections between Maryport and Whitehaven on the coast could be wild crosswinds again. Also, once of out of Keswick, it'll be crosswinds again but with a tailwind for the last 10-20 km.
The weather will certainly sort out who is really up for competing/winning and who isn't.