Thailand is a tropical country with its typical high temperature all year round. 25-30°C in the cold season, 35-40+°C in the hot season and 30-35°C during the rainy season. Humidity is always high, even though it's easier to bear during the cold season during which the sun shines. The rainy season is characterized by scattered heavy showers now and then everyday, cloudy weather almost full time.
Bangkok Airport. From the airport take a bus to Pattaya and from there a boat. Or take a boat from Ban Phe Koh Samet (7 km). Ban Phe is about 190 km from Bangkok and 80 km from Pattaya.