The best temperature range for deep frying tempura is between 160°C (320°F) and 190°C (375°F). However, the exact temperature may vary depending on the type of ingredient used, its size, texture, and how it's cut. I have created a guide for popular ingredients, which can be found above. Additionally, I will continue to add individual tempura recipes for more guidance. Please feel free to leave a comment below for additional advice.