How long to BBQ lamb backstrap (lamb backstrap (loin))? Grill for 3-4 min/side at 230-260°C (450-500°F). Complete temperature guide in °C and °F with step-by-step instructions.
By Bill Ohaire | Published: April 2026 | Last Updated: April 2026
Photo by Emre Vonal on Pexels
BBQ Lamb Backstrap (Loin) for 3-4 min/side over direct heat at 230-260°C (450-500°F). Internal temp: 60-63°C (140-145°F). Rest for 8-10 min.
Here is everything you need to know about cooking lamb backstrap (lamb backstrap (loin)) on the BBQ. We cover direct grilling, indirect heat, and smoking times with temperatures in Celsius (and Fahrenheit) so you get perfect results every time.
| Method | Temperature | Time |
|---|---|---|
| Direct Grilling | 230-260°C (450-500°F) | 3-4 min/side |
| Indirect Heat | 230-260°C (450-500°F) | 10-15 min total |
Thickness: 3-4cm diameter | Rest time: 8-10 min
Use a calibrated digital meat thermometer for accuracy. Insert the probe into the thickest part of the meat, away from bone or fat pockets, which can give false readings.
| Doneness | Internal Temperature |
|---|---|
| Rare | 49-52°C (120-125°F) |
| Medium-Rare | 54-57°C (130-135°F) |
| Medium | 60-63°C (140-145°F) |
| Medium-Well | 65-68°C (150-155°F) |
| Well Done | 71°C+ (160°F+) |
Whole muscle cuts of lamb are safe at 63°C (145°F) with a 3-minute rest, according to food safety authorities. Use a calibrated meat thermometer in the thickest part, away from bone.
The premium cut of lamb — tender, lean, and best served medium-rare. Sear hard and fast. Pairs brilliantly with chimichurri or mint sauce.
Temperature accuracy matters more than timing. Factors like wind, ambient temperature, grill type, and meat thickness all affect cook times. Always verify doneness with a thermometer rather than relying solely on the clock. — AmazingRibs.com
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Open CalculatorHow long do you BBQ lamb backstrap?
Grill lamb backstrap for 3-4 min/side over direct heat at 230-260°C (450-500°F). Always use a meat thermometer to check the internal temperature reaches 60-63°C (140-145°F).
What temperature should lamb backstrap be when cooked?
The safe internal temperature for lamb backstrap is 60-63°C (140-145°F). Use a digital meat thermometer inserted into the thickest part of the meat, away from any bone.
How long should lamb backstrap rest after BBQ?
Rest lamb backstrap for 8-10 min after removing from the BBQ. This allows the juices to redistribute throughout the meat, resulting in a juicier, more flavourful result. The internal temperature will continue to rise 2-3°C during this time.
Should I cook lamb backstrap on high or low heat?
Cook lamb backstrap over high direct heat (230-260°C (450-500°F)) for the best sear and flavour.