How Long to Smoke a Spiral Ham? A Foolproof Guide
Quick answer: for a fully cooked spiral ham, plan on 10 to 15 minutes per pound at 325F, then pull it when the thickest part reads 140F internal. An 8 lb ham takes roughly 80 to 120 minutes. Time is for planning your day. Temperature is what actually decides when it comes off.
Most spiral hams are already fully cooked. You are not cooking a raw piece of pork. You are reheating it while adding smoke, seasoning and a caramelized glaze, which makes spiral ham one of the easiest showstopping meats you can cook outdoors.
It also means overcooking is your biggest enemy.
Start by Checking the Label
Before anything else, confirm your ham says fully cooked or ready to eat. A fresh ham or one labeled cook before eating requires different procedures and different internal temperatures. Everything below is for the fully cooked kind.
Spiral Ham Smoking Time by Weight
Use this chart for planning, not as a substitute for a thermometer.
| Ham weight | Planning window at 325F | Pull at |
|---|---|---|
| 5 lbs | 50 to 75 minutes | 140F |
| 6 lbs | 60 to 90 minutes | 140F |
| 7 lbs | 70 to 105 minutes | 140F |
| 8 lbs | 80 to 120 minutes | 140F |
| 9 lbs | 90 to 135 minutes | 140F |
| 10 lbs | 100 to 150 minutes | 140F |
| 12 lbs | 120 to 180 minutes | 140F |
Outdoor cookers vary. Cold weather, wind, the shape of the ham, how often you open the lid and the accuracy of your grill thermometer all move these numbers.
Pro tip: build at least 30 minutes of slack into your holiday schedule. A ham that finishes early is easy to hold. Twelve hungry people waiting on a ham stuck at 112F is not.
Why We Cook Ham at 325F
Plenty of smoked ham recipes call for 225F or 250F. Those temperatures do add smoke, but consider what you are actually doing.
The ham is already smoked and already cooked. It does not need brisket treatment. At 325F you warm it efficiently, add a second layer of wood smoke, and still have time to build a proper glaze. And because a spiral ham has been sliced nearly to the bone, every additional hour in a hot, dry cooker costs you moisture across dozens of exposed surfaces.
USDA reheating guidance for a fully cooked spiral ham also uses 325F as its conventional oven temperature.
What Internal Temperature Should a Spiral Ham Reach?
For a fully cooked spiral ham packaged at a USDA-inspected plant, heat it to 140F internal. Hams from other sources should be reheated to 165F.
Insert a reliable thermometer into the thickest portion without touching the bone, and start checking before you think it is ready. Once you hit the target, more time does not make an already cooked ham more tender. It makes it drier.
The Grill Masters Club Double Smoked Spiral Ham
Ingredients
- 1 fully cooked bone-in spiral-cut half ham, 6 to 8 lbs
- 2 tablespoons Dijon or yellow mustard, as a binder
- 1/3 cup BBQ rub with a brown sugar base
- 1 cup BBQ sauce or glaze of choice
- 4 tablespoons butter
- 1 cup pineapple, apple or orange juice
- 1 orange, sliced
- 2 sprigs fresh thyme or rosemary
- Apple or cherry smoking wood
Instructions
- Confirm the ham. Check the label for fully cooked or ready to eat. Let it sit at room temperature for 30 to 45 minutes while the cooker preheats.
- Preheat. Set the grill or smoker for indirect cooking at 325F. Add apple or cherry wood.
- Season. Brush the ham with a thin layer of mustard, then apply the rub, working a little between the spiral slices without pulling them apart.
- Pan it. Place the ham cut side down in a cast iron skillet or foil pan. Add butter, juice, orange slices and herbs around the base.
- Smoke. Insert a leave-in probe into the thickest portion away from bone. Smoke roughly 10 to 15 minutes per pound until the internal temperature reads 125F to 130F.
- First glaze. Brush a thin layer of glaze over the ham and between some slices. Close the lid for 10 minutes.
- Build it. Apply two more thin coats, 10 minutes apart, mixing a spoonful of pan liquid into the glaze each time.
- Finish. Pull the ham when the thickest portion reaches 140F.
- Rest and serve. Rest 10 to 15 minutes, then spoon warm pan glaze over the slices.
Pellet Smoker vs. Charcoal vs. Gas
The target does not change: indirect heat, thermometer, 140F finish.
| Cooker | Setup |
|---|---|
| Pellet smoker | Set to 325F, add the ham, insert the probe, close the lid. Use a mild pellet or blend. |
| Charcoal kettle | Two-zone. Ham away from the coals, one or two wood chunks on the fire, lid vent positioned over the ham. |
| Kamado | Heat deflector in, cooker stabilized at 325F before the ham goes on. Go light on wood. |
| Gas grill | Burner beneath the ham off, outer burners holding 325F, ham over the unlit section. Chips in the smoker box if you have one. |
When Should You Add the Glaze?
Not at the beginning. Give the ham time to warm and take on smoke first.
When the internal temperature reaches roughly 125F to 130F, brush on a thin layer, close the lid and let it set. Add another layer as the ham approaches its finish temperature. You are looking for glossy, sticky and caramelized, not burned. Both sauces in our ham kit are built to set into that finish in three thin coats. The full breakdown is in The Best Glazes for Holiday Ham.
Two Hams, One Kit
We already paired the rubs and sauces for two complete holiday hams in the Double Smoked & Glazed Ham Kit: Hot Pepper Bacon for smoky sweet heat, Drunken Pineapple for a fruity, festive finish. Includes a 12 inch cotton mop brush and both recipe cards.
Frequently Asked Questions
How long to smoke a 10 lb spiral ham?
About 100 to 150 minutes at 325F, finishing at 140F internal.
Should you smoke a spiral ham at 225F or 325F?
325F for a fully cooked spiral ham. At 225F the ham spends much longer in a hot, dry cooker, and since it is already sliced nearly to the bone, that extra time mostly costs moisture.
Do you smoke a spiral ham covered or uncovered?
Uncovered in a pan for most of the cook. Tent loosely with foil only if the exterior darkens before the center is hot.
Can you smoke a spiral ham the day before?
You can, but it is not our first choice. Reheating an already twice-heated ham costs you more moisture. If you have to, hold it whole and wrapped, then warm gently and glaze just before serving.
How do you keep a spiral ham from drying out?
Cook it in a pan with liquid underneath, keep the slices together, glaze late and pull it at 140F. Full detail in How to Keep Spiral Ham From Drying Out.
The Bottom Line
Do not obsess over an exact number of minutes. Use time to plan and temperature to cook. Start with roughly 10 to 15 minutes per pound at 325F, glaze near the end, and pull the ham when the thickest portion hits 140F.
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