Kite size: the parameter that changes everything
Choosing the right kite size is the first real decision that affects both your safety and your fun on the water. A kite that is too big pulls you out of control the moment the wind picks up; a kite that is too small simply won't let you ride. The right size depends on three variables: your weight, wind strength and your level.
As an IKO-certified coach I see frustrated riders every season who find the sport "too hard" only because they go out with the wrong kite. This guide gives you the complete kite size chart, the calculation method, and the special cases — including the Varatraza wind of Madagascar.
Kite size chart by rider weight and wind speed
This chart is a solid baseline for an intermediate rider on a twin-tip. Go one size up below, one size down above. When in doubt, always start with the smallest kite in the recommended range.
| Rider weight | 12-14 kn | 15-17 kn | 18-20 kn | 21-24 kn | 25-28 kn | 29-33 kn |
|---|---|---|---|---|---|---|
| 110-132 lb | 12 m² | 10-11 m² | 9 m² | 7-8 m² | 6-7 m² | 5-6 m² |
| 132-154 lb | 13 m² | 11-12 m² | 10 m² | 8-9 m² | 7 m² | 6 m² |
| 154-176 lb | 14 m² | 12 m² | 10-11 m² | 9 m² | 7-8 m² | 6-7 m² |
| 176-198 lb | 15 m² | 13 m² | 12 m² | 10 m² | 8-9 m² | 7 m² |
| 198-220 lb | 16 m² | 14 m² | 13 m² | 11 m² | 9-10 m² | 8 m² |
| 220+ lb | 17+ m² | 15 m² | 14 m² | 12 m² | 10-11 m² | 9 m² |
Indicative values for modern kites and a standard twin-tip board. Foiling or surfboards require a smaller kite for the same wind.
How to calculate your kite size
The principle is simple: the heavier you are, the more power you need (so a bigger kite); the stronger the wind, the less you need (so a smaller kite). In practice, a 75 kg rider on a twin-tip will gain about 1 m² for roughly 2 knots less wind around the sweet spot of 18-20 knots.
- Weight: every extra 10 kg adds about 1 to 2 m² of surface area.
- Wind: every extra 4 to 5 knots removes about 1 to 2 m² of kite.
- Board type: twin-tip = baseline; foil = -1 to -2 m²; surf/directional = -0.5 to -1 m²; hydrofoil = even less.
- Level: beginners often overpower themselves in 15-20 knots. Stay at the top of the recommended range to learn smoothly.
Common kite sizes and their wind ranges
5-7 m²
Strong wind (25-35 knots) and lighter riders. Perfect for big air and muscular Varatraza days.
9-12 m²
The most versatile range (15-25 knots). Covers the most common conditions worldwide.
14-17 m²
Light wind (10-15 knots), heavier riders and low-wind spots. Essential for European wind lulls.
What kite size to ride at Sakalava, Madagascar
The Sakalava Bay spot (Diego Suarez) has a rare advantage: regular, powerful wind — the Varatraza — blowing from April to October between 20 and 35 knots. Big kites are rarely needed here! In the middle of the season:
- 60-70 kg riders — a 7 to 8 m² kite is enough most of the time.
- 70-85 kg riders — the 9 m² is the reference, with a 7 m² for strong days.
- 85 kg and above — a 10 m², or a 9 m² in July-August, and an 8 m² in solid sessions.
- Beginners — the sheltered lagoon and moderate early-season wind (15-20 knots in April-May) allow a 10-12 m² kite safely.
See our dedicated Madagascar kite size guide for month-by-month detail, and the Varatraza wind statistics to understand the exact conditions.
Common kite size mistakes
Here are the five mistakes I correct most often on the spot:
- Going out with a kite too big "to get more power" — above 20 knots, an oversized kite becomes dangerous and unpleasant.
- Ignoring the gusts — a forecast of 18 knots with gusts to 26 means sizing for the gust, not the average.
- Trusting the wrong wind report — different stations report different values; measure on site before pumping up.
- Sizing your kite to match your friend's — weight changes everything; no size is universal.
- Confusing size and model — a 9 m² high-performance kite does not fly like a 9 m² all-rounder; profile and shape matter as much as surface area.
Chart vs reality: what to expect on site
Most schools and centres — ours at Sakalava included — have a fleet of kites from 5 to 14 m² and a coach to validate the size of the day. Never go out alone on a size that feels borderline: an instructor's advice saves 90% of wasted sessions.
Frequently asked questions about kite sizes
What size kite should a beginner use? A 70-80 kg beginner rides 10-12 m² in 15-20 knots. Choose a stable, forgiving kite rather than a powerful one.
What size kite for a 70 kg rider? 12 m² around 13-15 knots, 10 m² around 16-20 knots, 9 m² around 21-25 knots, 7 m² around 26-30 knots.
What size kite in Madagascar? With the Varatraza at 20-35 knots, a 9 m² (70-85 kg) or 7-8 m² (lighter) covers most of the season.
How do I know if my kite is too big? If you are constantly pulled, the kite is unstable in gusts and the waterstart feels aggressive, change size.
Can I start kitesurfing without gear? Yes, all our packages include equipment matched to your level and the day's wind. See our lesson prices.
Travelling to Madagascar? Our gear rental includes kites from 5 to 14 m² sized for the Varatraza wind, and our kitesurf lessons include all equipment.
The right kite, the right wind, the right coach
Private IKO-certified coaching at Sakalava Bay. Gear matched to your weight and the day's wind.