Just as Rallye Monte-Carlo can be turned on its head by a sudden snowfall in the French Alps, so can Zagreb be flipped on the turn of a cloud - just look at last year. Remember Ott Tänak's inspired choice of wet weather Pirellis for the final day? Was the rain coming? Maybe? Definitely.
The penultimate stage was a washout, allowing the Estonian to turn a half-minute deficit into the lead. Admittedly, he missed the win because of the combination of quick-drying roads and a hard-charging Kalle Rovanperä.
But talk to Rovanperä about the conditions in Croatia, and there remains a slightly quizzical look. Be ready for the unexpected - first down the road in 2021, he found that super-slippery section at the end of the opening stage and dropped his Yaris WRC down a bank.