Wind speed chart
Beaufort, mph, knots and metres per second, and what each band actually means in the air.
Researched from published specifications and verified owner reviews · updated 2026
The short answer
Consumer folding drones commonly publish a maximum wind resistance around 10.7 metres per second, which is about 24 mph, and that is a survival figure rather than a working one. Sub-250 g aircraft become unpleasant above roughly 15 mph and heavier folding aircraft above roughly 20 mph. Wind at 200 to 400 feet is routinely substantially stronger than at head height, so a ground reading anchors an estimate rather than answering the question.
Wind is the condition that decides more flights than any other, and it is the one most pilots assess by looking at a forecast for a town and then at some trees. This chart converts between the units you will encounter and states plainly what each band means for a small multirotor, so a number becomes a decision.
BTMETER
BTMETER BT-100 handheld anemometer
Wind speed, temperature, CFM
Ground wind is not wind at altitude and a handheld meter does not pretend otherwise. What it does is anchor the estimate with a real number from where you are standing, which is a great deal better than a forecast for a town ten miles away and a look at some branches. It costs about the same as a set of propellers.
Prices move constantly. We earn a commission if you buy through these links, at no extra cost to you.
The conversion table
| Beaufort | mph | Knots | m/s | What you see | Drone consequence |
|---|---|---|---|---|---|
| 0 Calm | Under 1 | Under 1 | Under 0.5 | Smoke rises vertically | Ideal. Rated flight times are realistic. |
| 1 Light air | 1 to 3 | 1 to 3 | 0.5 to 1.5 | Smoke drifts | No practical effect. |
| 2 Light breeze | 4 to 7 | 4 to 6 | 1.6 to 3.3 | Leaves rustle, wind felt on face | Fine. Slight endurance cost. |
| 3 Gentle breeze | 8 to 12 | 7 to 10 | 3.4 to 5.4 | Leaves and small twigs in motion | Comfortable for most aircraft. Watch endurance. |
| 4 Moderate breeze | 13 to 18 | 11 to 16 | 5.5 to 7.9 | Dust raised, small branches move | Sub-250 g aircraft start being pushed around. |
| 5 Fresh breeze | 19 to 24 | 17 to 21 | 8.0 to 10.7 | Small trees sway | At or beyond published limits for many aircraft. |
| 6 Strong breeze | 25 to 31 | 22 to 27 | 10.8 to 13.8 | Large branches move, wires whistle | Beyond consumer aircraft limits. Do not fly. |
| 7 Near gale | 32 to 38 | 28 to 33 | 13.9 to 17.1 | Whole trees in motion | No. |
| 8 Gale | 39 to 46 | 34 to 40 | 17.2 to 20.7 | Twigs break off trees | No. |
Force 4 is the band worth memorising. It is where light aircraft stop holding a clean position, where footage starts showing correction, and where the gap between a 248 g airframe and a 724 g one becomes obvious rather than theoretical.
Practical limits by aircraft class
| Class | Comfortable | Working limit | Symptom at the limit |
|---|---|---|---|
| Palm-launch micro, around 135 g | Under 8 mph | Around 12 mph | Visible drift, unable to hold a line |
| Sub-250 g folding | Under 12 mph | Around 18 mph | Gimbal correction visible in footage, endurance falls sharply |
| Prosumer folding, 600 to 950 g | Under 18 mph | Around 24 mph | Aircraft holds position, footage still degrades in gusts |
| Cinewhoop and ducted FPV | Under 10 mph | Around 15 mph | Ducts catch wind. Handling deteriorates faster than expected. |
| 5 inch FPV freestyle | Under 15 mph | Pilot skill dependent | Manual mode has thrust to spare and no position hold to save you |
These are working figures rather than manufacturer limits, and they are conservative on purpose. A published maximum wind resistance is the speed at which the aircraft can still maintain control, which is a very different claim from the speed at which it produces footage you want. Work a specific case on the wind and airspeed margin calculator.
Why altitude changes everything
Surface friction slows wind near the ground. Buildings, trees and terrain create a boundary layer in which wind speed increases with height, so what you measure at head height is systematically lower than what the aircraft meets at 200 or 400 feet. The difference is commonly large, and the direction can shift as well.
Two practical consequences. First, treat a ground reading as a floor rather than an estimate: if it is 12 mph where you stand, plan for meaningfully more at altitude. Second, a launch that feels calm can put an aircraft into conditions it cannot hold against thirty seconds later, which is why the first climb should be slow and deliberate with an eye on how much stick input the aircraft needs to stay put.
Terrain adds turbulence on top of wind speed. Ridges, building edges and tree lines generate rotor and shear that a smooth average figure does not describe, and those are the conditions that produce sudden uncommanded movement rather than steady drift.
Fly upwind first, always
This is the single most useful habit on this page. Flying out downwind is nearly free: the aircraft covers ground quickly, draws little power and feels wonderful. The return is directly into the wind at reduced ground speed and substantially higher power draw, on a pack that is already partly used.
Flying the first leg upwind reverses the asymmetry, so the leg flown on the most depleted pack is the easy one. It costs nothing except discipline and it is the difference between a comfortable return and watching a battery percentage fall faster than the distance. Cost the return leg properly on the return-to-home reserve planner.
What wind does to footage before it does to control
Long before an aircraft struggles to hold position, wind degrades the picture. Gimbal correction against gusts introduces small movements that read as instability in a slow shot. Yaw drift makes a straight line stop being straight. And any propeller imperfection becomes visible as vibration under the higher and more variable loading, which is why a nicked blade shows up on a windy day and not on a calm one. See fixing jello and vibration.
That is why the honest go or no-go threshold for cinematic work is well below the aircraft's control limit. If the deliverable is a smooth reveal, force 4 is already a compromise. If the deliverable is inspection evidence, higher wind is more tolerable because sharp frozen frames survive movement better than slow cinematic ones do.
The pre-launch wind routine
Check the forecast for the location, not the town. Wind varies over short distances, particularly near coasts, ridges and lakes.
Take a ground reading where you are standing. Hold the meter at head height, clear of the car and any structure, and note both the average and the gusts. The gust figure matters more for a small aircraft than the average does.
Climb slowly and watch the aircraft, not the screen. How much correction it needs to hold a hover at 100 feet tells you what 400 feet will be like.
Decide before you commit distance. The decision to turn back is easy at 200 metres and unpleasant at two kilometres. Never let the wind decide it for you.
Remember cold. Windy days are often cold days, and cold reduces pack capacity on top of the extra power wind demands. Both effects compound, which is covered on flying in cold weather and on the flight time calculator.
Wind resistance figures here are drawn from published manufacturer specifications and the working limits are conservative interpretations of them rather than test results. Conditions vary, the remote pilot in command is responsible for the go or no-go decision, and nothing on this page is professional advice.
Questions people ask
+ How much wind can a drone fly in?
Manufacturers publish a maximum wind resistance figure, commonly in the region of 10.7 metres per second for consumer folding aircraft, which is about 24 mph. That is a survival figure rather than a working one. Sub-250 g aircraft become genuinely unpleasant above about 15 mph and heavier folding aircraft above about 20 mph, and footage quality degrades well before control does.
+ Is wind at altitude the same as wind on the ground?
No, and this is the single most consequential misunderstanding in drone flight planning. Surface friction slows wind near the ground, so wind at 200 or 400 feet is routinely substantially stronger than what you feel at head height, and it can also be from a different direction. A ground reading anchors an estimate rather than answering the question.
+ What is the danger of flying downwind first?
The outbound leg is nearly free and the return is not. Flying out downwind feels effortless, covers ground quickly and uses very little battery, and then the return leg is directly into the wind at reduced ground speed and much higher power draw. Always fly the first leg upwind, so the leg you may have to fly on a depleted pack is the easy one.
+ How does wind affect flight time?
Substantially. Holding position against wind consumes thrust that would otherwise be doing nothing, so a hover in 15 mph wind draws considerably more power than a hover in still air. Plan on meaningfully reduced endurance in anything above a light breeze, and treat rated flight times as still-air figures because that is what they are.
+ Does a heavier drone handle wind better?
Generally yes, because inertia resists displacement and larger airframes carry more reserve thrust. A 724 g aircraft holds a position in conditions that push a 248 g aircraft around visibly. That is the clearest practical argument for the heavier weight class and one of the reasons the sub-250 g exemption has a real cost attached.
+ What wind reading means do not fly?
There is no single number, because it depends on the aircraft, the altitude, the terrain and the job. A useful rule is to stop when the sustained ground reading approaches half the aircraft's published maximum wind resistance, because wind at altitude is commonly well above the surface reading and gusts add more on top. Turbulence near buildings and ridges matters as much as the average.
