Wind strength and kite sizes

Kitesurfers change kite size and/or line length from the harness to the kite depending on wind strength -- stronger winds call for a smaller kite to prevent overpower situations. It is important to avoid using too large a kite, particularly when you are new to the sport.

Kites come in different aspect ratios (AR). The AR refers to how much of the kite is exposed to the wind and what angle the wind takes as it passes through the kite. Newer kites also provide a "depower" option to reduce the power in the kite. By using depower, the kite's angle of attack to the wind is reduced, thereby catching less wind in the kite and reducing the power or pull.

The more optimal these factors, the lower wind speed you will be able to perform in. A 170 lbs. rider will need about 8 to 10 knots sustained wind and a larger kite (16 m² or bigger). In 12 - 15 knots you can have a lot of fun by doing low jumps and freestyle maneuvers. 16 - 20 knots on a 16 square meter kite will allow you jumping high, while 20 to 24 knots might allow you to fly with the birds on a 12 square meter kite. An experienced rider generally carries a 'quiver' of different sized kites appropriate for different wind ranges. A typical kite quiver might include 9m², 13m² and 18m² traditional "C-kites". Exact kite sizes will vary depending on rider weight and desired wind ranges.

Bow kites have a wider wind range than C-kites, so two kite sizes (such 7m² and 12m²) could form an effective quiver for winds ranging from 10 to 30+ knots for a 75kg rider.

Wind direction

It is generally held that kitesurfers should never venture onto the water in direct offshore winds (because of the possibility of being 'flown' out to sea) or direct onshore winds (because of the possibility of being thrown against beach objects, trees, rocks etc). There are two exceptions to riding in offshore winds. If you have someone with a boat or other watercraft which can assist you back to shore, or if you are riding on inland lakes where you'll inevitably hit the far shore eventually. Cross-shore wind directions are widely considered to be the best. Offshore winds are also generally gusty and much more difficult to kitesurf in.