May is the tourist season in Hainan, and it is also the season for fruits and seafood. The following are some food recommendations from Hainan in May:

1. Coconut: May is the coconut season, and coconut trees in Hainan begin to bear fruit. Coconut water is sweet and delicious, and coconut meat can also be used to make various delicacies, such as coconut rice and chicken coconut.

2. Mango: Mango is one of Hainan's specialties, and May is the mango season. Mango in Hainan is delicate and sweet, and can be eaten raw or made into juice, ice cream and so on.

3. Litchi: Litchi is one of the specialties of Hainan, and May is the season of Litchi. Litchi in Hainan is delicious and sweet, and can be eaten raw or made into juice, candied fruit and so on.

4. Seafood: May is the seafood season in Hainan, and there are many fresh seafood in the coastal cities of Hainan. Common seafood includes lobster, crab, shellfish and fish.

5. Cold dishes: May is a hot season in Hainan, and cold dishes are one of the local specialties. Cold dishes include cold dishes, mixed powder, mixed noodles, etc., which are refreshing and suitable for summer consumption.

The above are some food recommendations from Hainan in May. You can choose according to your own tastes and preferences.