There is no 0, 1, or 2. Kiters start with 3.
Gentle Breeze. 12-19kph 8-12mph, 7-10 knot, 3.5-5.4 m/s. Billy is out on his SUP and light wind kite. You sit on shore eating sandwiches and wait.
Moderate Breeze. 20-28kph, 13-17 mph, 11-16 knot, 5.5-7.9m/s. The instructor get his student in the water. It's enough to relaunch, body drag, but not enough to hurt you if you do an unintentional kiteloop. You open up your root beer and wait some more. Force 3 or force 4 means eat your sandwhich and wait some more.
Fresh breeze. 29-38 kph, 18-24 mph, 17-21 knot, 8-10.7m/s. Finally the wind is here. If you are a thin lad you set up your 12, but a larger lad like myself will set up the 14 meter. Conditions are perfect to try new tricks and get some small jumps in, crashes don't hurt. Force 5 is time to jive.
Strong breeze. 39-49 km/h, 39-49 kph, 25-30 mph, 22-27 knot. Everyone gets out a smaller kite, large lads on the 12's, middle sized fellas on the 10's and ladies on the 7's. People start landing the huge jumps. Noobs are told to be careful, might be too much wind for them. Crashes start to be painful. Force 6 means hang on tight bitches.
Moderate gale. 50-61kph, 31-38mph, 28-33knot, 13.9-17.1m/s. People go rooting through their trunk for their smallest kite, large lads on the 7's , and little fellas and ladies on kite trainers. The sand is getting kicked up into people's eyes and there start to be kiters on shore looking at the angry sea and not even bothering to pump up. Bad crashes are able to break ribs. gale force 7 time for large lads to open up your 7m
Gale. 62-74kph, 39-46mph, 34-40 knot, 17.2-20.7m/s. Ruben Lenten pumps up his kite and everyone else watches from shore.
There is no 9, 10, 11, 12, kitesurfing for fun ends at force 8.