How to Bake Salmon: Oven Times and Temps by Thickness
How to Bake Salmon: The Short Answer
Bake salmon in a 400°F (about 205°C) oven on a lined sheet pan, skin side down, until the thickest part reaches 145°F (63°C) and the flesh flakes easily with a fork. For a standard 1-inch-thick fillet, that takes 12 to 15 minutes. Thinner tail pieces need 8 to 10 minutes; a thick center-cut portion or a whole side can need 18 to 20. Rub the fish with olive oil, season with salt and pepper, and don't open the oven until the low end of the time range.
That's the whole method. Everything below explains the two variables that actually decide how your salmon turns out — thickness and internal temperature — plus a complete recipe, a timing chart, and fixes for the most common failures.
Why Thickness Matters More Than Weight
Most recipes tell you to bake "a 6-ounce fillet" for a fixed number of minutes. That's the wrong variable. Heat travels from the surface of the fish to the center, so cooking time is driven by thickness, not weight. A wide, flat 8-ounce tail piece cooks faster than a tall, narrow 6-ounce center cut.
Before you preheat anything, look at your fillets:
- Under ¾ inch thick — usually tail pieces. They cook fast and dry out fast. Check early.
- 1 inch thick — the standard center-cut portion at most fish counters. The timing sweet spot.
- 1½ inches or more — thick king salmon portions or a whole side. These reward patience and a thermometer.
If your fillets vary in thickness, tuck the thin tail end under itself to roughly double it, or simply pull the thin pieces from the oven a few minutes before the thick ones. Uneven fillets are the single most common reason one piece is silky and the next is chalky.
What Temperature to Bake Salmon
Salmon is flexible about oven temperature; each setting just trades speed for forgiveness.
| Oven temp | Best for | Character of the result |
|---|---|---|
| 325°F (165°C) | Thick portions, whole sides | Slow, even, very forgiving; soft texture, no browning |
| 400°F (205°C) | Everyday fillets — our default | Good balance of speed, moisture, and light browning |
| 425°F (220°C) | Weeknight speed, crispier edges | Faster, browner, smaller margin for error |
| 450°F+ (230°C+) | Broiler-style finishes | Real browning, but easy to overshoot the center |
400°F is the temperature to memorize. It cooks a 1-inch fillet in the time it takes to steam rice, it browns the surface a little, and it leaves you a window of two to three minutes between "done" and "dry" — wider than you get at 425°F or under the broiler.
Low-and-slow (325°F or below) is genuinely better for expensive, thick cuts and for anyone nervous about overcooking: the fish climbs to temperature gradually, so the window of doneness stretches from a couple of minutes to nearly ten. The tradeoff is a pale surface and a longer wait.
How Long to Bake Salmon at 400°F
Times below assume a preheated conventional oven, fillets straight from the refrigerator, and skin-on portions on a lined sheet pan. Convection ovens run efficient — start checking at the low end or set the oven 25°F lower.
| Thickness / cut | Time at 400°F | Start checking at |
|---|---|---|
| ½-inch thin fillet or tail | 8–10 minutes | 7 minutes |
| ¾-inch fillet | 10–12 minutes | 9 minutes |
| 1-inch center-cut fillet | 12–15 minutes | 11 minutes |
| 1½-inch thick portion | 15–18 minutes | 14 minutes |
| Whole side (2–3 lbs) | 15–20 minutes | 14 minutes |
Two honest caveats about any timing chart, including this one. First, home ovens routinely run 25°F hot or cold of their dial; an inexpensive oven thermometer settles the question. Second, times are a starting point, not a verdict — the thermometer and the flake test decide when the fish is actually done, which is why the "start checking" column exists.
Baking from frozen works better with salmon than with most fish: keep the 400°F oven, add roughly 10 to 15 extra minutes, and confirm 145°F in the center before serving. Thawing overnight in the refrigerator still gives more even results.
Baked Salmon Temperature: When Is It Done?
The FDA's safe internal temperature for fin fish is 145°F (63°C), measured at the thickest point. At that temperature the flesh turns opaque and separates easily along its natural seams.
The practical technique that keeps 145°F from tasting dry is carryover cooking. A fillet pulled from the oven keeps rising a few degrees as it rests. Take the pan out when the thickest part reads about 140°F, let it rest 3 to 5 minutes loosely covered, and it will finish at the safe target while staying noticeably juicier than fish that hit 145°F inside the oven.
To measure correctly, slide an instant-read thermometer into the side of the fillet so the tip sits in the center of the thickest section — probing straight down from the top usually overshoots into the pan.
No thermometer? Two visual cues work together:
- The flake test. Press a fork gently into the thickest part and twist. Done salmon separates into moist, distinct flakes; underdone salmon resists and looks wet-translucent inside.
- The color check. The center should be opaque coral-pink, not glassy orange.
Both cues, the temperatures behind them, and what to do when they disagree get a full explainer in our guide to how to tell when fish is done — it's the companion piece to every fish method on this site.
One safety note worth stating plainly: some restaurants serve salmon at lower internal temperatures for texture. At home, especially for pregnant people, young children, older adults, or anyone immunocompromised, 145°F is the standard we recommend without exception.
Oven Baked Salmon Recipe (Step by Step)
Serves 4 · About 5 minutes of prep · 12–15 minutes in the oven
Ingredients
- 4 skin-on salmon fillets, about 6 oz each and 1 inch thick
- 1 tablespoon olive oil
- ¾ teaspoon kosher salt
- Freshly ground black pepper
- 1 lemon — half thinly sliced, half in wedges for serving
- Optional: 2 cloves garlic, minced, or 1 teaspoon Dijon mustard brushed on top
Method
- Heat the oven to 400°F with a rack in the center. Line a sheet pan with parchment or foil.
- Dry the fillets well with paper towels. Dry fish browns; wet fish steams.
- Season. Rub all over with olive oil, then salt and pepper the flesh side. Lay fillets skin side down, with lemon slices on or around them. If pieces vary in thickness, tuck thin tail ends under.
- Bake 12 to 15 minutes, starting checks at 11. Pull the pan when the thickest part reads about 140°F.
- Rest 3 to 5 minutes. Carryover heat carries the fish to 145°F. The skin releases easily from the parchment; slide a spatula between skin and flesh if you'd rather serve skinless.
- Serve with lemon wedges and a drizzle of the pan juices.
Foil packets vs. open pan
Sealing fillets in a foil or parchment packet steams the fish in its own moisture — very forgiving, zero browning, and it can buy a slightly wider doneness window. An open pan gives light browning and concentrated flavor. For weeknight fillets we default to the open pan; for a whole side headed to a dinner table, a loosely tented foil top for the first 10 minutes splits the difference.
Troubleshooting Baked Salmon
White stuff on the surface. That's albumin, a protein that migrates out and sets when salmon cooks — harmless, just cosmetic. High heat and overcooking push more of it out. A 10-minute soak in a simple brine (about 1 tablespoon of salt per cup of cold water) before baking helps reduce it, as does the gentler 325°F oven.
Dry, chalky texture. The fish went past 145°F, almost always because it stayed in the oven "just two more minutes" after it looked done. Buy thicker fillets when you can, pull at 140°F, and trust the rest.
Skin stuck to the pan. Parchment nearly eliminates this. On foil, a thin film of oil under each fillet and a fully preheated oven both help; so does letting the cooked fish rest a minute before lifting.
Fishy smell while baking. Very fresh salmon smells like the sea, not the dock. Truly fresh fillets should be cooked within a day or two of purchase and kept cold until they hit the pan. A strong ammonia or sour smell before cooking means the fish should be discarded, not seasoned harder.
Leftovers. Refrigerate cooked salmon within 2 hours and eat it within 3 to 4 days. It's better cold or gently reheated in a low oven than blasted in a microwave, and it's excellent flaked over salads.
Building Dinner Around It
A sheet pan of salmon anchors a meal with almost no extra work. Halved small potatoes or broccoli florets tossed in oil can share the pan — give vegetables a 10-to-15-minute head start at 400°F, then add the fish so everything finishes together.
If you're cooking for a crowd or building a full coastal spread, salmon pairs naturally with a quick shellfish starter — sautéed shrimp take about 5 minutes and use the same "pull it before it overcooks" instincts you just practiced. On a cold night, a bowl of New England clam chowder ahead of a modest salmon portion makes the kind of dinner a shore-town restaurant would charge real money for.
The Method, Once More
Measure the thickness. Heat the oven to 400°F. Oil, salt, pepper; skin side down on a lined pan. Twelve to fifteen minutes for a 1-inch fillet, out of the oven at 140°F, rested to 145°F. Flakes that separate, a center that's opaque. That's baked salmon — the rest is lemon.