I'm going to Sanya, but it's cloudy recently. Is the photo effect also affected?

Of course it will be affected. Sanya is mainly sunny, but cloudy days don't look good. Moreover, the temperature is not very high on cloudy days, so it is not appropriate to go to Sanya on cloudy days. But if you take pictures, it is possible to take another taste, but it is not as beautiful as the sun.