Temp in summer around 25-40°C, water around 21-22°C, shorts are fine for summer when the wind is at its best. Warm water in summer (~22°C) with colder water in winter (~16°C).
Newport is for experienced advanced riders only! It has an extremely hard launch and has near by swimming flags. Do not ride here by yourself. Try and ride with a local. When the surf is up, there are a lot of surfers out and they definitely have right of way! And theyll tell you too!