KvN said..
I will be in Perth until March. Not sure which kitesizes I need. I am 75kg. Need some help. Thanks!!

You're here at the right time. If you're on a surfboard (and why wouldn't you be), then you should be able to hold a 6 or 7m for the season... It's looking promising. Up a size if you're riding a twin tip.

You can get away with one kite for summer, unless you can't handle missing a single day.

Is there no such thing as a light wind day in Perth or something? How do you get away with not have a 12 or bigger. Im on my 14 80% of the time in QLD

Thanks guys! Will go with a 9 and 12

I'm 83kg, and a 9m and a 12m on twin tips (135 and 137cm) sees me out in everything in the range ~15-25 knots which is nearly every day. Above 25 kts it's just more fun on the 9m (the queen of kite sizes). Light wind days sub 15 kts I have a Zephyr, but it only gets used at start and end of the season. You're a little lighter so 8 and 11 might also suit depending on your board size. But 9 & 12 is perfect.

Make the 12 a cheap one, it'll probably get stolen while you're riding the 9

lol

Is the water cold in Perth in Summer

Do you need a wetsuit