The best time to visit Koh Samui is during its dryer season, from January through late September. October, November, and December tend to be the rainy, windy months, and prices are higher during this time as well.
The island has offers a variety of accommodations and activities. The villages of Meanam, Boput, and Cheongmon feature quiet, private beaches and resorts. Chaweng boasts more lively beaches and nightlife, as well as shopping. If you're on a budget, try Lamai, where there is plenty to do at a reasonable price.
If you choose to rent a scooter, drive cautiously. There are plentiful on Koh Samui's busy streets and many drivers have little experience with scooters. Wear a helmet and pull all the over to look around or read a map.
Koh Samui has very strict drinking and driving rules, so if you rent a car or scooter, do not operate it while intoxicated.
If you don't rent a vehicle, taxis are available.
The locals are very friendly, especially so toward children. It is polite to smile and even say "hello" and "thank you," English words that most locals understand.
Avoid public displays of affection and wearing only a bathing suit anyplace other than the beach. These actions are considered disrespectful.
Koh Samui is renowned for its beaches, due the beautiful white sand and hot climate. However, heavy tourism often means the beaches are crowded, especially during the dry season. According to Asia Travel Tips, Chaweng Beach is the best and often the least crowded.
At most beaches, you'll find vendors--often children--roaming the sand, selling local food and souvenirs.
In December through April, the ocean currents can be very strong. Red flags on the beach mean that swimming conditions are dangerous.
Most major currencies can be exchanged to Baht, the local currency, at all banks and exchange booths. Some ATMs and exchange booths accept credit cards. Overall, most places that accept credit cards accept only VISA and MasterCard. The majority of the banks close at 3:30 pm on weekdays and are not open on the weekends.
You'll find shops selling souvenirs, including T-shirts, sarongs, local artifacts, jewelry, and knock-off designer items, throughout Koh Samui. Shop around before buying. Because there are so many tourists in here, souvenir vendors are very competitive. Try to find deals, or bargain prices with vendors.
If you purchase a lot of items while in Koh Samui, it may be cheaper to ship them home rather than carry them on the plane. Shipping from Koh Samui is inexpensive, and there is a post office in every village.
