How Long Do Oysters Last?
Live oysters in the shell last 5–10 days in the fridge under a damp cloth, and shucked oysters 3–10 days. Frozen, they keep 3–4 months but must then be cooked.
Oysters — live
shelf life- Shucked: 3–10 days in the fridge
- Cooked: 3–4 days in the fridge
Fridge at 40°F (4°C) or below · freezer at 0°F (−18°C). Freezer times are for best quality; frozen food stays safe longer.
Oysters are bivalve shellfish sold live in the shell or shucked in tubs of their own liquor. A live oyster clamps shut and survives for days out of water if kept cold and damp, which is what keeps it safe to eat. Because oysters filter seawater, they can carry Vibrio bacteria and norovirus, which no freshness check can detect.
How to store oysters
- Store live oysters cup-side down in an open bowl or tray, covered with a damp towel, so they hold their liquor. Do not seal them in a bag or container; they need to breathe.
- Never store live oysters in water or on ice that melts into a puddle. Standing fresh water kills them.
- Shuck oysters only just before serving and keep the platter on crushed ice. A shucked oyster on the half shell should not sit out more than 2 hours.
- Keep tub oysters in their own liquor in the coldest part of the fridge; the liquor should fully cover them.
- To freeze, shuck the oysters, rinse away grit, and freeze them covered in their strained liquor in a rigid container. Use them only in cooked dishes such as stew or stuffing.
How to tell if oysters have gone bad
- A shell that gapes open and does not close when tapped firmly means the oyster is dead; discard it.
- A shell that sounds hollow, feels unusually light, or is full of mud.
- Once opened, a dry, shrunken oyster with no liquor, or meat that is cloudy gray, brown, pink or black.
- A strong sulfur, sour or rotten smell. Live oysters smell like a clean ocean breeze.
- Tub oysters in cloudy, milky or sour-smelling liquor. The liquor should be clear or only slightly opalescent.
Bacteria that cause food poisoning usually do not change the look, smell or taste of food. Go by the time limits first, and the signs above second.
Oysters shelf life chart
| State | Fridge | Freezer | Pantry |
|---|---|---|---|
| Live | 5–10 days | 3–4 months | Not safe |
| Best eaten raw within a few days of harvest; check the harvest tag date. Frozen oysters are for cooking only. | |||
| Shucked | 3–10 days | 3–4 months | Not safe |
| Follow the use-by date on the tub if it is sooner. | |||
| Cooked | 3–4 days | 3 months | Not safe |
Not safe = perishable: no more than 2 hours at room temperature (1 hour above 90°F / 32°C). Not recommended = possible, but quality suffers or it serves no purpose.
Frequently asked questions
How long do oysters in the shell last in the fridge?
Live oysters in the shell keep 5–10 days in the fridge at 40°F (4°C) or colder, counted from harvest, not from purchase. Ask to see the harvest date on the shellfish tag. For eating raw, use them within a few days; older oysters that are still alive and tightly closed are better cooked.
Can a good-looking raw oyster still make you sick?
Yes. Vibrio bacteria and norovirus do not change the look, smell or taste of an oyster, and hot sauce, lemon juice and alcohol do not kill them. The CDC advises that only thorough cooking makes oysters safe, and that people with liver disease, diabetes or weakened immunity should not eat them raw at all.
How do I know if an oyster is dead before shucking?
Tap any oyster whose shell is slightly open; a live one will close within a few seconds. One that stays open, or whose shell is cracked or broken, is dead or dying and must be thrown away. Dead shellfish spoil very quickly and cannot be made safe by cooking.
Can you freeze oysters?
Yes, oysters can be frozen for 3–4 months, either shucked in their liquor or live in the shell after scrubbing. Freezing kills the oyster and softens the meat, so frozen oysters should never be eaten raw. Thaw them in the refrigerator and cook them within a day.
How long do shucked oysters in a jar last?
Shucked oysters last 3–10 days in the fridge from the shucking date, so go by the use-by date on the tub and keep it tightly closed. They are intended for cooking. Once you open the container, plan to use the oysters within a couple of days.
Related foods
| Food | Fridge | Freezer | Pantry |
|---|---|---|---|
| Clams Live |
5–10 days | 3–4 months | Not safe |
| Mussels Live |
5–10 days | 3–4 months | Not safe |
| Scallops Raw |
1–2 days | 3–6 months | Not safe |
| Shrimp Raw |
1–2 days | 3–6 months | Not safe |
| Crab Cooked |
3–4 days | 2–3 months | Not safe |
| Oyster Sauce Opened |
3–6 months | Not recommended | Not recommended |
More shellfish: Lobster, Squid (Calamari).
Reviewed 2026-09-20. Times follow published USDA FoodKeeper / FSIS, FDA and CDC storage guidance; where sources differ we use the shorter time. How we compile this data.