Thailand can best be described as tropical and humid for the majority of the country during most of the year. Thailand weather & when to go: May May overview May sees a welcome drop in temperature throughout the country, although highs of 33-34°C are not unusual, and most (but not all) regions experience a notable rise in rainfall, albeit low and sporadic initially. This means it’s hot and humid in July, although there’s differences in the weather depending on which part of the country you’re heading to. In the wake of the tsunami it has been reported that 8, 457 people were confirmed dead with a further 4, 499 missing and close to 8500 injured. So while the year may be split into 'wet' and 'dry' seasons there is a very little variation in temperature. Beachwear should be confined to the beach and topless sunbathing is frowned upon. On Patong Beach, you will find most of the nightlife and the busiest and cheapest shopping district.If you venture off the coast you can visit the amazing islands of Phi Phi, which you may recognise from the film 'The Beach' which was filmed in and around this mind-blowingly beautiful area. The SW monsoon blows from the Indian Ocean and brings with it warm, humid and cloudy air and is what is associated with the During this period is when the whole country sees most of its annual rainfall, particularly when you reach the higher points of northern Thailand.During the rainy season, the daily hours of sunshine decrease to about 6 or 7 hours a day as the cloud cover increases and the days become someone muggy and overcast. Rain in … Some small areas have a tropical rainforest climate (type Af). Take a pair of good walking shoes or boots for jungle trekking, and long-sleeved tops to protect against mosquitoes.Thailand is bordered to the west by Myanmar and the Indian Ocean, to the south and east by Malaysia and the Gulf of Thailand, to the east by Cambodia, and to the north and east by Laos. Thailand is quite modest so short or revealing clothes in major cities should be avoided if the goal is to be respectful to the locals. The weather in Thailand’s different part has different patterns. The southern islands like Koh Samui are best from June to September where temperatures average around 27/28°C (81/82°F).Lightweights and rainwear are advised.