Can Shrimp Sit Out Overnight?
Last reviewed: May 2026
Quick answer
No. Shrimp left out overnight must be discarded, whether cooked or raw. Shrimp is highly perishable — the USDA recommends refrigerating all cooked shrimp within 2 hours of cooking and keeping raw shrimp refrigerated until use. Overnight (8 or more hours) at room temperature far exceeds the safe limit for both.
Bottom line: discard it
Shrimp left out overnight — cooked or raw — must be discarded. The USDA 2-hour room-temperature limit applies to both.
The 2-hour rule: cooked and raw shrimp
The USDA recommends discarding all perishable seafood — including shrimp — that has been left at room temperature for more than 2 hours (1 hour above 90°F/32°C). This applies equally to cooked shrimp and raw shrimp. In the temperature danger zone between 40°F and 140°F (4°C–60°C), bacteria multiply rapidly. See the official food-safety sources used by StillSafeFood for references.
Why shrimp spoils quickly
Shrimp has a high moisture content and delicate protein structure that makes it one of the fastest-spoiling shellfish. Bacteria including Vibrio species — found naturally in coastal waters — and Listeria can grow in both raw and cooked shrimp at room temperature. Shrimp can be unsafe before any odor or texture change is noticeable.
Safe storage for shrimp
- Refrigerate cooked shrimp within 2 hours of cooking (1 hour above 90°F).
- Keep raw shrimp refrigerated at all times; cook or use within 1–2 days of purchase.
- Store in an airtight container at or below 40°F (4°C).
- Consume refrigerated cooked shrimp within 3–4 days.
- Freeze shrimp you will not cook or eat within 1–2 days.
Frequently asked questions
Can cooked shrimp sit out overnight?
No. Cooked shrimp must be refrigerated within 2 hours. Shrimp left out overnight must be discarded.
Can raw shrimp sit out overnight?
No. Raw shrimp should not sit at room temperature for more than 2 hours (1 hour above 90°F/32°C). Discard raw shrimp left out overnight.
How long can shrimp sit out before it goes bad?
No more than 2 hours at room temperature (1 hour above 90°F), whether cooked or raw, per USDA food safety guidance.
Check your shrimp
Use StillSafeFood to check any shrimp dish — cooked shrimp, shrimp cocktail, or stir-fry.
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