How Long Do You Bake a Potato On a Grill? | Time & Temp

Grilling a standard 8-ounce russet potato usually takes 45 to 60 minutes over medium, indirect heat (350°F–400°F), flipping once halfway through.

Baking a potato on a grill sounds straightforward until you’re standing over a hot grate wondering if the center is still raw. The internet offers conflicting advice — some say wrap it in foil, some say don’t. Others claim 45 minutes, while some suggest over an hour.

Here’s what grilling recipes generally agree on: for a standard 8-ounce russet, plan for 45 to 60 minutes over medium, indirect grill heat. The method you choose — foil or no foil, direct or indirect heat — shifts that window slightly, but the core timing stays consistent across most approaches.

The Perfect Grill Temperature and Cooking Window

Indirect heat is the standard for baking potatoes on a grill. This means the potato sits away from the direct flame or coals, usually on the upper rack or the unlit side of the grill. Grilling sources suggest a target temperature between 350°F and 400°F.

At that temperature, a medium russet takes roughly 30 minutes per side. Most recipes recommend grilling for 30 minutes, flipping the potato, and then continuing for another 20 to 35 minutes until a fork slides in with little resistance.

Potato size changes the math. A smaller 5-ounce potato may be done in 40 minutes, while a large 12-ounce baker can take 70 minutes. Testing for doneness with a fork or instant-read thermometer is the only reliable finish line.

Foil vs. No Foil — What You’re Really Deciding

The foil debate is the biggest divide in grilled baked potato recipes. Each method trades off texture, cook time, and smokiness. Here is how the main approaches compare:

• No foil (crispy skin): Brushing the potato with oil and grilling it unwrapped produces a crackling, salted skin. Grilling experts often suggest using the upper rack with the lid closed for about one hour.
• Foil (steamed interior): Wrapping the potato traps steam, cooking the inside faster and keeping it fluffy. Most foil methods suggest 45 minutes to 1 hour on medium heat, flipping halfway.
• Foil then char: Some recipes cook the potato in foil until tender, then remove the foil and place it over direct heat for one minute per side to crisp the exterior skin.
• Foil with smoky flavor: Piercing the foil-wrapped potato allows grill smoke to seep in, giving the flesh subtle smokiness without drying out the skin over the full cook period.

None of these methods is strictly better than the others. Your choice depends on whether you prioritize a crispy skin or a reliably fluffy interior — both are easy to achieve with a little planning ahead on the grill.

How to Grill a Baked Potato Step by Step

Regardless of the method, the prep work stays the same. Scrub the potatoes clean, dry them thoroughly, and poke each one several times with a fork to let steam escape. Coat them lightly with olive oil and season generously with kosher salt.

Preheat your grill for indirect cooking. Most methods, including The Kitchn’s baked potato guide, recommend stabilizing the temperature around 350°F to 400°F before placing the potatoes on the grate.

Place the potatoes on the indirect-heat side or upper rack. Close the lid and let them cook undisturbed for 30 minutes. Flip them, then continue cooking for another 20 to 30 minutes.

Keep in mind that grill temperature, outside air temperature, and potato variety all affect timing. The table above is a starting point — the fork test is your final authority for pulling them off the heat.

Signs Your Grilled Potato Is Fully Cooked

Visual cues can be misleading. A potato might look charred on the outside while the center remains surprisingly firm. Use these checks to decide when to pull them off the heat:

1. The fork test: Insert a fork or skewer into the thickest part of the potato. It should slide in with almost no resistance. This is the most common doneness test across grilling guides.
2. Internal temperature: An instant-read thermometer should register 205°F to 210°F in the center. This range guarantees the starches have fully gelatinized for a fluffy texture.
3. Skin tightness: A fully baked potato’s skin will feel taut and slightly firm. If the skin feels soggy or loose, the potato may need more time or a higher initial grill heat.
4. Visual steam: When you cut into a properly baked potato, a steady plume of steam should rise from the center. If there is no visible steam, the interior heat distribution is uneven.

Combining the fork test with an internal temperature reading gives you the most reliable result. Once the potato hits 205°F, rest it for a few minutes before serving to let the interior finish setting up perfectly.

Common Mistakes and How to Avoid Them

Even experienced grillers run into issues with baked potatoes. The most frequent problems come down to heat placement and patience rather than the recipe itself.

Stick to a Consistent Schedule

Many recipes instruct grilling for 30 minutes, flipping, then cooking another 20–35 minutes — Yodersmokers’ timing chart walks through this exact schedule. Sticking to it prevents the classic undercooked-center problem.

Another common mistake is skipping the oil and salt rub. Without oil, the skin dries out and can burn rather than crisp. Salt helps draw out surface moisture for a better overall texture on the finished potato.

The Bottom Line

Baking a potato on the grill takes roughly 45 to 60 minutes at 350–400°F. The specific method — foil or no foil, direct or indirect heat — changes the prep but the core timing remains similar across most tested recipes. Always test for doneness with a fork or instant-read thermometer before pulling them off.

If you are serving these potatoes alongside a specific main dish and need to adjust for dietary goals like carbohydrate management, a registered dietitian can help fit the potato’s serving size into your individual meal plan without any surprises.