Peak Season is from November to February when the weather is dry and pleasant in Thailand.
Shoulder Season: March to May is when days in Thailand are hot and humid, but the tourists are as spirited ever during this season.
Off-season: July - October brings monsoons to Thailand, with the rainfall being sporadic, but torrential. Most island shut down during these months and there are incidents of flooding in some parts of the country.
For Budget Travellers: INR 600 - 1500 a day
For Mid-range Travellers: INR 1000 to 3500 a day
For Luxury Travellers: INR 6000 and upwards
Passport holders from G7 countries (Canada, France, Germany, Italy, Japan, the United Kingdom and the United States) may enter by land or air for 30 days, visa-free. The countries and territories that don’t require a visa for up to 30 days (30 days when travelling by air; 2 weeks when entering by road ) are Australia, Austria, Belgium, Bahrain, Brunei, Czech Republic, Denmark, Estonia, Finland, Greece, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Kuwait, Laos, Liechtenstein, Luxembourg, Macau, Malaysia, Monaco, Mongolia, Netherlands, New Zealand, Norway, Oman, Philippines, Poland, Portugal, Qatar, Russia, Singapore, Slovakia, Slovenia, Spain, South Africa, Sweden, Switzerland, Argentina, Brazil, Chile, Peru and South Korea, Turkey, United Arab Emirates, and Vietnam. The countries and territories that don’t require a visa for up to 14 days are Cambodia and Ukraine. For visa extension, tourists can apply to the immigration office for a usual fee of 1900B. If you overstay your visa, the usual penalty is a fine of 500B per day, with a 20,000B limit.
Visa on Arrival: Bangkok offers visa on arrival to 19 countries - Andorra, Bulgaria, Bhutan, China, Cyprus, Ethiopia, India, Kazakhstan, Latvia, Lithuania, Maldives, Malta, Mauritius, Romania, San Marino, Saudi Arabia, Taiwan, Ukraine and Uzbekistan