What temperature is oil typically heated to for frying tempura?

Oil is typically heated to 180°C (350°F) for frying tempura. This temperature is hot enough to rapidly vaporize moisture in the food, helping create a light, crisp coating while limiting the time the ingredient spends absorbing oil.

Tempura is usually fried briefly in vegetable, canola, sesame, or tea-seed oil. The exact temperature can vary with the ingredient: delicate vegetables may cook slightly differently from thick pieces of seafood, and adding cold batter temporarily lowers the oil temperature. For that reason, cooks often monitor the oil throughout a batch rather than relying on the initial reading.

Tempura’s pale, delicate crust is different from the darker, thicker coating of many Western fried foods. The batter is mixed minimally and kept cold, while the hot oil sets its outer surface quickly. If the oil is too cool, the coating can become greasy; if it is too hot, the batter may brown before the food cooks through. Around 180°C is therefore a practical standard, not an absolute rule for every piece.