Smoked salmon doesn’t last as long as most people think once the pack is opened. It is eaten without cooking, and Listeria, a germ that can grow at refrigerator temperatures, is why the guidance is stricter than for most fish. Add the platter that sat out through brunch, or the pack with a date that is getting close, and the question gets real quickly. Here is what federal, university and extension guidance says about how long it lasts, how long it can sit out, whether it freezes, and who should skip it.
Does smoked salmon go bad?
The Short Answer: Yes. Refrigerated smoked salmon is a ready-to-eat fish that can carry Listeria, which can grow at refrigerator temperatures. Unopened, keep it at 40°F or colder and follow the date and storage instructions on the package. Once opened, a UC Extension mail-order fact sheet prepared with USDA lists vacuum-packed smoked salmon, including Nova lox, at 2 days at 40°F, so that is our cautious default. One producer says 5 days for best taste, and it is a quality recommendation. Don’t leave it out more than 2 hours, or 1 hour above 90°F. Freezer times are about quality, not safety. FoodSafety.gov says pregnant people should skip refrigerated smoked seafood unless it is cooked in a dish.
For a complete pantry and fridge reference, see our Food Storage Guide. For another raw-style fish that needs careful handling, see how long sushi lasts in the fridge.
Smoked Salmon Shelf Life: At a Glance
Unopened, refrigerated
Keep at 40°F or colder. Follow the date and storage instructions on the package
Opened, refrigerated
Our default: 2 days, per a UC Extension and USDA mail-order chart. A producer says 5 days for quality
Out on a platter
2 hours at most, 1 hour above 90°F, per USDA
Freezer at 0°F
About 2 months for best quality. USDA says freezer times are for quality only
Canned or shelf-stable
Check the label. Keep Refrigerated products need the refrigerator even when unopened
Pregnant or weakened immune system
Skip it or cook it first, per FoodSafety.gov and the UK FSA
Slimy, sour or past the date
Discard it
Key Takeaways
Both FoodSafety.gov and the FDA say refrigerated smoked seafood, often labeled nova-style, lox, kippered or smoked, is a Listeria concern in pregnancy unless it is in a cooked dish.
North Carolina State’s Listeria fact sheet says Listeria can grow at temperatures as low as 34°F, and that low storage temperatures slow but do not stop its growth.
Published figures do not all measure the same thing. A UC Extension mail-order chart prepared with USDA lists vacuum-packed smoked salmon at 2 days opened. Idaho (5 to 8 days) and Minnesota (14 days) do not say whether their figures are for opened or sealed fish.
USDA says food should not be left out of refrigeration more than 2 hours, or more than 1 hour if the temperature is above 90°F.
USDA says food stored constantly at 0°F remains safe and that freezer times are for quality only. NC State adds that freezing may not des
