The monsoon season is still continue in July. The water will be low but the wind can kick up depends on if a storm rolling from the west. Wind will be coming from Adaman sea and over the mainland, makes it hard to predict with forecast. If we get lucky with a good storm then it will blow for days.
This is the peak of the summer months and also HIGH season for accommodation prices. The island if full with end of the summer family holiday. The wind will be coming from the west and tide is low in the morning. The wind usually comes in early morning, soft mid day and strong late afternoon.
Rainy season starts in the north and central Thailand, that makes the gulf of Thailand very windy with west wind. Beginning to mid month is the best time and we usually have Kite Jam on the 3rd week of September since the tide will fill the bay all day long.