Blame it on the Bass Strait. The weather, or perhaps more accurately, the weather, the climate, and the environment, has a huge effect on the Phillip Island circuit.
The weather, because the strong winds which blow in off the Strait brings regular dowsings of rain. The climate, because the hot summers, cool winters and wet weather places a severe strain on the asphalt. And the environment, because the sea breeze brings in salt, and the Antarctic ozone hole means UV levels are high, both of which have a corrosive effect on the circuit surface.
Perched on top of cliffs overlooking the Bass Strait is a stunning setting for a race track, but the Phillip Island circuit pays a heavy price for the privilege.
All of those factors have combined this year to throw the Australian round of MotoGP a curveball, or to make it more colloquially accurate, bowled MotoGP a googly.
The weather at Phillip Island was at its most deceptive, relatively warm and sunny, but with clouds bearing quick showers blowing in at regular intervals.
No class would escape the tricky conditions, though some were more badly affected than others, Moto3 losing the first half of FP2 to the wet.