March weather forecast
Sanya, China

The arrival of March in Sanya introduces a visible shift towards warmer weather. With a moderate UV index of 12, visitors should consider bringing adequate sun protection. Despite an increase in average rainfall to 19mm (0.75"), the rain does not last long enough to dampen the high spirits of visitors. March signals the city's move towards a more humid climate as the temperatures continue to ascend. Overall, March remains an inviting month for outdoor activities amid the sporadic showers.

Temperature

With the start of March, Sanya measures an average high-temperature of a still moderately hot 28.6°C (83.5°F), not significantly differing from February's 26.8°C (80.2°F). In Sanya, the nighttime temperature averages to a pleasant 21.9°C (71.4°F) during March.

Rainfall

In Sanya, during March, the rain falls for 3.9 days and regularly aggregates up to 19mm (0.75") of precipitation. 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 March is 23.4°C (74.1°F).
Note: Individual preferences to cold, influenced by conditions such as sunshine, wind, and surrounding temperature, play a part in the comfort of swimming in 23.4°C (74.1°F) waters. (As an aside, Olympic swimming standards dictate water temperatures from 25°C (77°F) to 28°C (82.4°F).)

Daylight

In March, the average length of the day is 12h and 2min.
On the first day of March, sunrise is at 07:00 and sunset at 18:48. On the last day of the month, sunrise is at 06:36 and sunset at 18:55 CST.

Sunshine

The months with the least sunshine are January through March, with an average of 5h of sunshine.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV rays for the average person.
Note: In March, the maximum UV index of 12 translates into these guidelines:
Adopt all essential precautions. Preventing sun harm is crucial. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Always apply a sunscreen with at least 30 SPF to protect yourself. Sunscreen can reduce the harmful effects of the Sun's radiation on your immune system. Be mindful! Sand and water reflections can up the Sun's UV exposure.