How Long Do You Bake a Potato On a Grill? | Grill Times

For a medium russet potato wrapped in foil, grill over indirect heat at around 350°F for about 1 hour until fork-tender or it reaches an internal.

You might assume baking a potato on the grill is basically the same as an oven — just set it and forget it. But the grill’s environment, with indirect heat and foil, changes the timing more than you’d expect. A potato that bakes in the oven in 45 minutes often needs a full hour on the grill.

The honest answer depends mainly on two things: the size of your potato and the heat of your grill. This article breaks down the standard times, the best temperatures, and the simple tricks to get a fluffy interior with a slightly smoky skin every time.

The Standard Grill Time for a Baked Potato

Most recipe sources agree that a medium-sized russet potato — about 8 to 10 ounces — takes roughly 1 hour when cooked indirectly over a grill preheated to 350°F. The potato is typically wrapped in foil, which traps steam and creates an oven-like environment.

Rotation matters. Allrecipes recommends turning the potato every 15 minutes to prevent hot spots from burning the bottom. Skipping the rotation can leave you with one underdone side and one scorched one.

The most reliable doneness test is an instant-read thermometer. Many grill cooks aim for an internal temperature of 205°F to 210°F, the point where the starch granules fully gelatinize and the flesh turns fluffy. Without a thermometer, a fork should slide into the center with almost no resistance — that’s the classic fork-tender test.

Why the Timing Varies So Much

A single “1 hour” rule sounds simple, but your specific setup can shift that window by 15 to 30 minutes. The main variables break down like this:

• Potato size and shape: A 10–12 ounce potato can need the full 60 minutes or even a few extra. Smaller or thin potatoes may be done in 45. The thicker the potato, the longer the heat takes to reach the center.
• Grill temperature: At 350°F the standard time is about 60 minutes. Crank the grill to 450°F and you might shave off 15 minutes — but only if you watch closely to avoid a burnt exterior and raw interior.
• Direct vs. indirect heat: Foil-wrapped potatoes can survive direct heat if the coals are well below the grates, but indirect heat is safer and more forgiving. Direct heat at high temp risks burning the foil side before the center cooks.
• Foil or no foil: Wrapping in foil steams the potato and speeds cooking slightly, but it also softens the skin. Unwrapped potatoes take longer and dry out more easily, though some people prefer the texture.
• Altitude and outdoor conditions: On a windy day or at higher altitude, your grill may struggle to hold steady temperature, which can add 5–10 minutes.

Because of these factors, no single number fits every grill session. The best approach is to use the 60-minute mark as a baseline and start checking for doneness at 50 minutes.

Step-by-Step: How to Grill the Perfect Baked Potato

Getting the timing right is easier when you follow a consistent workflow. Most recipes start the same way: scrub the potato clean, dry it completely, then coat it with a thin layer of olive oil. The oil helps the skin crisp up and gives the salt something to stick to.

Wrap each potato tightly in heavy-duty aluminum foil. Preheat your grill to medium — about 350°F — and set up two-zone cooking (coals or burners on one side, potatoes on the other). Place the foil-wrapped potatoes on the indirect side, close the lid, and set a timer for 30 minutes. After that, flip them and rotate their position so the ones nearest the heat source get a turn farther away.

Continue cooking for another 30 minutes, then test one. If it’s not fork-tender, give it another 10 minutes — or switch to the grill wrapped potatoes for 1 method that Allrecipes details, which uses consistent rotation at 350°F. For a visual guide and exact ingredient amounts, that recipe is a handy reference.

Times assume foil wrapping and indirect heat. For direct heat, reduce temperature by about 50°F and check earlier. Always verify with a thermometer or fork test.

Tips for Crispy Skin and Even Cooking

Grilled baked potatoes can come out soft-skinned and pale if you leave them wrapped the whole time. Here are a few adjustments to improve the final texture:

1. Oil generously before wrapping. A tablespoon of oil per 8-ounce potato helps the foil conduct heat evenly and gives the skin a head start on crisping.
2. Unwrap and finish over direct heat. After the potato is fully cooked, open the foil and place the potato directly over the coals or burners for 2–3 minutes per side. The high heat dries the surface and creates a slightly crunchy exterior.
3. Let it rest 5 minutes before cutting. This allows the interior steam to redistribute, resulting in a fluffier texture rather than a dense, wet center.
4. Use an instant-read thermometer. Poking a potato with a fork is fine, but the 205–210°F target is more precise. Insert the probe into the thickest part of the potato, avoiding the foil.
5. Season after grilling. Salt can pull moisture to the surface during cooking, which makes the skin tough. Sprinkle salt and pepper right before serving instead.

These tips are especially helpful if you’re cooking potatoes alongside steaks or chicken where the grill is running hot. A quick unwrap-and-sear step takes only a few extra minutes but dramatically improves the eating experience.

Grill Temperature and Heat Setup

Maintaining a steady temperature on a grill is harder than in an oven. Gas grills tend to hold 350°F more reliably, while charcoal grills require occasional vent adjustments and fresh coals if the cook runs long.

Per The Kitchn, you should preheat grill to 350°F and set up indirect heat by leaving one burner off (gas) or piling coals on one side (charcoal). If you’re using a flattop or griddle, the guide also notes that you can cook potatoes directly over low flames as long as the grates are far enough from the coals.

When you need faster results, higher temperatures are an option. At 450–500°F, foil-wrapped potatoes can be done in about 45 minutes for medium sizes. The risk is that the foil side facing the heat source can char before the center softens. To compensate, rotate more frequently — every 15 minutes instead of 15 — and consider placing a heat diffuser (or a second piece of foil) under the potatoes.

These times assume foil wrapping and indirect heat. At the highest temperatures, check for doneness at the lower end of the range to avoid burning.

The Bottom Line

Grilling a baked potato is a forgiving process once you understand the key levers: potato size, grill temperature, and foil management. A medium russet at 350°F gives you a reliable 1-hour benchmark, but don’t hesitate to adjust based on your grill’s personality. Use the fork or thermometer test to confirm, and consider a quick unwrap-and-sear finish if you want a crispy skin.

Next time you fire up the grill for burgers or steaks, toss a few foil-wrapped potatoes on the indirect side. With a little attention to rotation and temperature, you’ll have a side that’s ready when the meat rests — and no oven needed.