May weather forecast
Sanya, China

May marks the onset of summer in Sanya, featuring distinctive weather traits, making it easily recognizable. It escalates dramatically from the 43mm (1.69") precipitation in April to 142mm (5.59"), making it one of the wettest months in Sanya. Daylight extends into longer periods, enabling tourists to enjoy more daylight hours. The city takes on a summery glow, characterized by hot temperatures, longer days, and increasing humidity. These definable changes in May weather establish the city's transition into full summer.

Temperature

May is the month that records the highest temperatures in Sanya, with averages ranging from a high of 32°C (89.6°F) to a low of 25.6°C (78.1°F).

Rainfall

In May, in Sanya, China, the rain falls for 10 days. Throughout May, 142mm (5.59") of precipitation is accumulated. In Sanya, during the entire year, the rain falls for 111.1 days and collects up to 1392mm (54.8") of precipitation.

Sea temperature

In Sanya, the average seawater temperature in May is 28.9°C (84°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

The average length of the day in May is 12h and 59min.
On the first day of the month, sunrise is at 06:14 and sunset at 19:03. On the last day of May, in Sanya, China, sunrise is at 06:05 and sunset at 19:14 CST.

Sunshine

May and July, with an average of 7h of sunshine, are months with the most sunshine in Sanya.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Sanya. A UV Index value of 11, and more, symbolizes an excessive health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 12 in May translates into this advice:
Employ every crucial safety step. Those with fair skin could experience burns in a matter of minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Always opt for UVA and UVB-resistant sunglasses on radiant days. Apply and frequently reapply a minimum SPF 30 sunscreen even on cloudy days, especially after swimming or an outdoor workout. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.