How Long Does Corn Take To Cook On The Grill

ByLily

Grilled corn takes about 15 to 20 minutes over medium heat, with frequent turning to get those charred kernels evenly. But how long does corn take to cook on the grill depends on a few things, like whether you soak it, husk it, or wrap it in foil.

This guide breaks down the timing for every method so you never end up with raw or burnt corn again.

How Long Does Corn Take To Cook On The Grill

The short answer is 15 to 20 minutes for most methods. The chart below gives you exact times based on how you prep the corn.

  • Husked directly on the grates: 10 to 15 minutes
  • In the husk (soaked): 15 to 20 minutes
  • In the husk (not soaked): 20 to 25 minutes
  • Wrapped in foil: 20 to 25 minutes
  • Pre-boiled then grilled: 5 to 10 minutes

Medium heat means a grill temperature around 350 to 450 degrees F. If your grill runs hotter, cut the time down and turn more often.

Factors That Change Grilling Time

No two ears of corn cook at the exact same speed. Here is what moves the needle.

Heat Level

Medium heat is the sweet spot. High heat chars the outside before the inside steams through. Low heat dries the kernels out before they get any color.

Husk On Or Off

The husk acts like a natural steamer. Corn cooked in the husk needs more time because the heat has to work through those layers. Husked corn sits right on the grates and cooks faster.

Soaking

Soaking husked corn in water for 10 to 30 minutes adds moisture and slows burning. Soaked corn usually needs the full 15 to 20 minutes. Unsoaked husks can catch fire, so keep a spray bottle nearby.

Ear Size

Big, fat ears take longer then skinny ones. Small ears might finish in 10 minutes. Large ears can push past 20.

How To Grill Corn In The Husk

This is the most forgiving method. The husk protects the kernels and locks in sweetness.

  1. Pull the husks back gently and remove the silk. Leave the husks attached at the base.
  2. Pull the husks back up over the corn.
  3. Soak the ears in cold water for 10 to 30 minutes.
  4. Place on a medium grill and close the lid.
  5. Turn every 5 minutes for 15 to 20 minutes total.
  6. The corn is done when the husks are charred and the kernels feel tender through the leaves.

If you skip the soak, add 5 more minutes and watch for flare-ups.

How To Grill Husked Corn

Husked corn gives you those dark char marks fast. It also dries out quicker, so stay close to the grill.

  1. Shuck the corn and remove all silk.
  2. Brush each ear with oil or melted butter.
  3. Season with salt and pepper.
  4. Lay the ears directly on medium grates.
  5. Turn every 2 to 3 minutes for 10 to 15 minutes.
  6. Pull the corn when you see charred spots on all sides.

A little blackening is good. Completely black kernels taste bitter.

How To Grill Corn In Foil

Foil packs steam the corn and prevent burning. They are great for beginners and for cooking a big batch at once.

  1. Shuck the corn or leave the husk on, your choice.
  2. Add a pat of butter and any seasonings.
  3. Wrap each ear tightly in heavy-duty foil.
  4. Grill over medium heat for 20 to 25 minutes.
  5. Flip every 5 to 7 minutes.
  6. Open one packet to check doneness before pulling the rest.

Foil corn will not get char marks. If you want color, open the foil during the last 5 minutes.

Signs Your Corn Is Done

Timing is a guide, not a rule. Use these cues to know when to pull the corn off.

  • Kernels look plump and glossy
  • A fork or knife slides into a kernel with little resistance
  • The husk is charred and pulls away easily
  • You see light brown or black spots on husked ears
  • The corn smells sweet, not burnt

If the kernels still look pale and tight, give it a few more minutes.

Tips For Better Grilled Corn

  • Pick corn with tight green husks and brown silk. Fresh corn cooks faster and tastes sweeter.
  • Do not peel the husk all the way off before soaking. The base keeps the ear together.
  • Oil the grates, not just the corn, to stop sticking.
  • Keep a cool zone on the grill. Move ears there if they start burning.
  • Grill extra ears. Leftover corn works great in salads and salsas.
  • Season after grilling too. Butter and lime soak in better on hot corn.

Common Mistakes To Avoid

  • Walking away. Corn goes from perfect to burnt in about 2 minutes.
  • Using high heat the whole time. Medium heat cooks the inside without torching the outside.
  • Skipping the soak on husk-on corn. Dry husks burn fast and leave raw kernels.
  • Overcooking. Past 25 minutes, kernels turn mushy and lose their sweetness.
  • Not turning. One side will char while the other stays raw.

Stick with 15 to 20 minutes over medium heat, turn often, and check for plump, tender kernels. That is all it takes to get grilled corn right every time.

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