Force	mph	kmh	m/s	kts	Description		Effect on kite
0	0-1	<1	<9.3	0-1	Calm	Smoke rises vertically.	Launch frustrated
1	1-3	1-5	0.3-1.5	1-3	Light air	Direction of wind shown by smoke drift, but not by wind vane.	Very large lightweight Dopero, delta,  Rokkaku etc, may fly on a light line
2	4-7	6-11	1.5-3.3	4-6	Light Breeze	Wind felt on face; leaves rustle; ordinary vanes moved.	Sutton ff30 lofts 650g at 3.5mph
3	8-12	12-19	3.3-5.5	7-10	Gentle Breeze	Leaves and small twigs in constant motion; wind extends light flag.	KAP works well with most suitably sized kites at Bft 3. Drogue needed on Flowform kites
4	13-18	20-28	5.5-8.0	11-16	Moderate Breeze	Raises dust and loose paper; small branches are moved	Reduce kite size  increase  line weight & drogue size
5	19-24	29-38	8.0-10.8	17-21	Fresh Breeze	Small trees in leaf begin to sway; crested wavelets form on inland waters.	Precautions needed against risk of gust impact on  kite stability
6	25-31	39-49	10.8-13.9	22-27	Strong Breeze	Large branches in motion; whistling heard in wires.	KAP difficult as camera stabilisation becomes problematic
7	32-38	50-61	13.9-17.2	28-33	Near Gale	Whole trees in motion;inconvenieance felt when walking.	KAP not possible..
8	39-46	62-74	17.2-20.7	34-40	Gale	Breaks twigs off trees;generally impedes progress.	..without severe risk of injury...
9	47-54	75-88	20.7-24.5	41-47	Severe Gale	Slight structural damage occurs (chimney pots and slates removed).	...to operator and equipment!
10	55-63	89-102	24.5-28.4	48-55	Storm	Seldom experienced inland;trees uprooted;considerable stuctural damage occurs.
11	64-72	103-117	28.4-32.6	56-63	Violent Storm	Very rarely experienced;
12	73-83	>118	>32.6	64-71	Hurricane	accompanied by widespread damage.

Note:

Low wind speed: Bft 1-2
A mix of a large sail area, light line and light rig is required to lift a camera in light winds.
Caution is needed to be able to keep aloft during lulls, and be ready for any rise in wind speed which will make a large kite a risky platform for a camera!

High wind speed: Bft 4-5
Short gusts of 25mph may be survivable by a robust kite (such as the PFK Nighthawk) but if the wind is steady at these speeds the turbulence in the KAP flying zone of 30-60m AGL (above ground level) is usually such that photography is pointless.

Adding a drogue or tail will help the stability of most kites in winds over Bft 3 (about 12 mph).

It is worth bearing in mind that gusts are often double or more the average wind speed so a survivable gust is often a warning of a rising wind. Flying a large kite in a strong wind is not for the faint hearted, and can be downright dangerous.