Is the weather in Beihai in June 16 17 suitable for traveling?

You should be able to come. Recently, the weather forecast has been saying that there will be rain in Guangdong and Guangxi, and even there will be heavy rain along the coast of Guangxi. It has been said for a week that it hasn't rained in Beihai. Don't talk about the heavy rain, even the rain is pitiful. It was cloudy for three days in a row, and it didn't rain or get muggy. It's quite comfortable. I suggest you check the weather forecast the day before departure, when the estimate is more accurate. It's hard to say now.