How to choose the right rug weight for your horse

Rugging is one of those jobs that looks simple until you're standing at the field gate in the dark trying to remember whether your cob was clipped out or just trace-clipped, and whether last night's rug was too warm. The honest answer is that rug weight depends on four things working together — not just "it's cold, put a rug on."

The four factors that actually matter

• Clip status — a fully clipped horse loses heat far faster than one with a full winter coat. A horse with no clip in a normal winter coat often needs no rug at all down to quite low temperatures.
• Temperature (and wind chill) — the actual air temperature matters less than how it feels with wind and rain factored in. A dry, still 2°C is very different from a wet, windy 6°C.
• In or out overnight — a stabled horse is sheltered from wind and rain, so needs noticeably less rug than the same horse turned out overnight in the same temperature.
• The individual horse — age, condition, breed and how well they naturally hold weight and warmth all shift the "right" answer. A native-type pony in good condition needs far less than a fine-coated Thoroughbred.

A practical starting-point guide

These are sensible defaults for a horse of average condition, adjusted from clip status — use them as a starting point, then watch your own horse and adjust.

Figures assume overnight turnout with basic field shelter. Stabled horses can typically drop one weight band, since they're out of the wind.

How to tell if you got it wrong

Check under the rug at the base of the neck and behind the shoulder — not the legs, which are always cooler. Warm and dry is right. Damp or sweaty means too much rug; cold to the touch with a slightly tucked-up look means too little. Shivering is a clear too-cold signal and needs fixing straightaway, not overnight.

The bit that actually takes the guesswork out

All of the above is a solid manual starting point, but it's still an estimate you're making from memory of the forecast and last night's decision. MyGroom's Rug Advisor does this calculation automatically — it pulls the actual forecast for your yard's location, factors in the clip status and turnout setting you've logged for each horse, and checks the suggestion against the rugs you actually own, so it only ever recommends something that's in your cupboard.