Are grapes cool or hot in nature?
Generally, grapes are considered neutral in nature—neither cooling nor heating—and most people can consume them in moderation. However, excessive intake or consumption unsuitable for one's body constitution may cause discomfort. If in doubt, it is advisable to adjust intake according to individual physical conditions. Detailed analysis is as follows:

Grapes have a sweet and slightly sour taste, juicy pulp, and are rich in nutrients, including various vitamins and minerals. Their nature is mild and balanced, without strong cooling or warming properties. When consumed in moderation, they do not impose significant thermal stress on the body and are commonly regarded as a neutral fruit suitable for most individuals.
However, grapes contain relatively high levels of sugar. Overconsumption may lead to oral stickiness or throat discomfort; those with a heat-prone constitution may experience increased internal heat. People with weak spleen and stomach function may develop bloating or diarrhea, as sugars and acidic substances can increase gastrointestinal burden. Individuals with cold-deficient constitutions need not worry about cooling effects if consuming grapes in appropriate amounts.
It is important to control portion sizes—eating a small bunch per day is ideal. Avoid consuming grapes on an empty stomach to reduce irritation to the digestive tract. Rinse your mouth after eating to prevent tooth decay. Those with a heat-prone constitution may pair grapes with cooling foods, while individuals with weak digestion should reduce intake accordingly. Discontinue consumption if any discomfort occurs and adjust your diet appropriately.