“The wind sits in the shoulder of your sail, And you are stay’d for.”
— William Shakespeare, Hamlet
In kitesurfing, the wind is the driving force behind everything. From light breezes to stormy gales, the strength and quality of the wind dictate riding styles and equipment choices. This column explains the Beaufort scale in relation to sea conditions, records from competitions held in extreme winds, and provides a comparative chart for appropriate kite sizes based on rider weight and wind speed.
The Beaufort Scale and Real Beach Conditions
The Beaufort scale helps kitesurfers visually assess wind strength at the beach. The actual sea surface and beach conditions change with wind speed as follows:
- Force 3 or less (Under 10 knots): The sea surface has only small wavelets. Often insufficient for twin-tip kitesurfing, but rideable with modern light-wind gear or hydrofoils. A glassy surface without even a flutter indicates a completely windless “wind patch”.
- Force 4 (11-16 knots): Small waves start to form, and whitecaps become scattered. This is a comfortable cruising range using a larger kite or a foil board.
- Force 5 (17-21 knots): Whitecaps are clearly visible across the sea surface. This is the sweet spot where most riders feel comfortable freeriding on a twin-tip.
- Force 6 (22-27 knots): Wave crests break, and spray begins to fly. A strong wind range perfect for serious Big Air practice, providing ample hangtime.
- Force 7 (28-33 knots): Walking against the wind feels resistive, and dry sand blowing across the ground stings exposed legs. This is the realm where pro riders showcase serious performances.
- Force 8-9 (34-47 knots): Sea spray fills the air, and the entire sea surface looks white and hazy. A hardcore survival condition where average riders should avoid launching.
- Force 10 and above (48+ knots): “Smoke on the water” occurs, where strong winds whip moisture from the sea surface into a mist. An extreme zone involving a risk to life.
How Wind Direction Changes Sea “Color” and Expression
Not only wind strength, but also wind direction drastically changes the color and expression of the sea surface.
Under “offshore” conditions (wind blowing from land to sea), waves are suppressed, keeping the surface relatively flat. This reflects the sky’s color easily, highlighting the sea’s intrinsic beauty with deep blues or emerald greens. However, because the wind blows over land obstacles, the sea surface becomes mottled with windless areas (wind patches) and sudden gusts (blows). Areas hit by gusts ripple finely and appear visibly darker, known as “dark patches”.
Conversely, in “onshore” conditions (wind blowing from sea to land), the wind directly batters the sea surface as it approaches, causing waves to break early and generating countless whitecaps. The bubbles and foam from breaking waves turn the sea a whitish, murky, and aggressive hue. Furthermore, the prevalence of whitecaps makes the wind appear stronger than it actually is, often tricking inexperienced beginners into a false sense of security that the wind is sufficient.
Legendary Competitions Held in Extreme Winds
In competitive kitesurfing, especially Big Air events, extreme storm conditions are sought after to push human limits.
- Cold Hawaii Games (Denmark)
Targeting the Nordic storm season, this is one of the wildest events in kitesurfing history. In the freezing North Sea, battered by 50-55 knot—and sometimes 60 knot—gusts, athletes used tiny kites (like 7m) to boost to moon-like heights. It was such a survival test that even top riders remarked, “It was the scariest condition I’ve ever experienced; I was worried the gear would break.” - Lords of Tram (Barcarès, France)
A competition staged in the fierce local wind called the Tramontane in southern France. Past events have seen destructive gusts reaching 60-70 knots on a 50-knot base. In this environment, a slight steering error leads to a fatal crash. The battle was so insane that special green-flag rules were implemented, allowing riders to pause their jumps (or wait) while 55-knot gusts were blowing.
General Kite Size (㎡) Comparison by Weight and Wind Speed
In kitesurfing, choosing the appropriate kite size based on wind strength and body weight is directly linked to safety. Heavier riders need larger kites to harness the wind’s power, while lighter riders must switch to smaller sizes earlier.
The following is a guideline for kite sizes (㎡) when using a standard twin-tip board.
| Wind Speed (kts / m/s) | 50kg | 60kg | 70kg | 80kg | 90kg |
|---|---|---|---|---|---|
| 12-15kts (6-8m/s) Light |
8-9 ㎡ | 9-10 ㎡ | 11-12 ㎡ | 12-14 ㎡ | 14-16 ㎡ |
| 16-20kts (8-10m/s) Medium |
6-7 ㎡ | 8-9 ㎡ | 9-10 ㎡ | 10-12 ㎡ | 12-14 ㎡ |
| 21-25kts (11-13m/s) Strong |
5-6 ㎡ | 6-7 ㎡ | 8-9 ㎡ | 9-10 ㎡ | 10-12 ㎡ |
| 26-32kts (13-16m/s) Hard |
4-5 ㎡ | 5-6 ㎡ | 6-7 ㎡ | 8-9 ㎡ | 9-10 ㎡ |
| 33-40kts (17-21m/s) Extreme |
≤ 4 ㎡ | 4-5 ㎡ | 5-6 ㎡ | 6-7 ㎡ | 8-9 ㎡ |
| 40kts+ (21+m/s) Storm |
Not Rec. | ≤ 4 ㎡ | 4-5 ㎡ | 5-6 ㎡ | 7-8 ㎡ |
*As the appropriate size varies depending on the kite model, board size, and individual skill level, please use this strictly as a general guideline for freeriding.