It is best to travel to Sanya in March and April. Because the average temperature is about 25 degrees during the Spring Festival every year, it is not suitable for children to swim, because the temperature of seawater or swimming pool is several degrees different from that outside the beach, and children are prone to catch a cold. Most importantly, during the Spring Festival, hotel prices, air tickets, transportation and catering are all high consumption periods, and there are many tourist attractions, so it is not convenient to take a taxi. Taking children to travel is very tiring and troublesome. The tourist season in Sanya is from September to May, because the autumn and winter seasons in Sanya are warm and pleasant, and winter is the best time to travel to the seaside. In winter, even if the cold current strikes in other corners of the earth, you can still walk leisurely on the sunny beach in summer clothes and sandals, soak in warm seawater, eat tropical fruits and enjoy the romance in the ends of the earth. The off-season of Sanya tourism is from May to September every year. Because of the high temperature and long sunshine time, other domestic tourist destinations are just suitable for spring and summer, which distracts tourists' attention, so it is the relative off-season of Sanya tourism. In the off-season, July and August are summer holidays, the season when teachers and students go out to play, which also brings some vitality here. June and September are the off-season of Sanya tourism, so the prices of major hotels will also be the most favorable in a year. If you have a holiday in the off-season, you can go out to see the sea sooner or later. It is best to stay in an air-conditioned room or a place with green trees and sea breeze to enjoy the cool at noon. But at this time, it is also favored by some tourists who like quiet and pay attention to benefits. Because it is located in the tropics, the temperature is relatively high throughout the year, with little change in summer and winter, with an average annual temperature of 25.5 degrees. The hottest month is June, with an average temperature of 28.5℃ and an extreme maximum temperature of 35.7℃, which is more pleasant than many cities in the mainland. Visitors who have been here in summer know that the sun in summer is very hot, but it is not boring. The air is humid and the sea breeze is blowing, so it is cooler indoors under the tree. Extended information: Sanya classic tourist attractions: 1. Wuzhizhou, the most beautiful island in Hainan, must go. 2. Nansan, which is 0/08m away from Guanyin/KLOC in Hainan, is spectacular. The whole Nanshan has a beautiful environment, good mountains and good sea. 3. Yanoda rainforest, natural oxygen bar, beautiful environment, mountain roads and waterways are more fun, but it consumes a lot of energy. 4. Yalong Bay, the first bay in the world, has soft beaches, beautiful seascape and clear water. 5. If You Are the One 2 Scenic Area Yalong Bay Forest Park has a beautiful environment. This border island is a paradise for marine life. 7. Jiajing Island, an uninhabited island that has been closed for many years, experiences the original uninhabited island and has beautiful scenery. 8. West Island is the second largest island along the coast of Hainan Province after Dazhou Island. 9. Sanya has a long history and is very wonderful, so it is worth visiting.