The recommended internal temperature for well-cooked shrimp is 120°F (49°C) . This temperature is ideal for grilling large shrimp, as it allows for maximum flavor and juiciness from the meat. It is important to note that smaller shrimp tend to cook very fast and are trickier to handle on the grill, so it is recommended to use large shrimp for grilling. The FDA recommends a minimum internal temperature of 145°F (63°C) for almost all seafood, including shrimp, for food safety reasons. However, many people find the flesh too chewy at this level and prefer a doneness of 120°F (49°C) instead to keep the shrimp juicy. To measure the internal temperature of shrimp, insert the probe of an instant-read thermometer into the thickest section of the shrimp. As soon as it reaches the target temperature, remove the shrimp from the heat source and serve.