Thailand Weather in May
Season: Summer/ Hot Season
Travel Recommendation Rate:
May is the last month of summer in Thailand and rainy season is on the way, making the climate of Thailand in May humid and hot, which is not so suitable for traveling. The precipitation in May is about 175mm (6.9in), while around 15 rainy days come then. Due to more rain, the temperature is a little lower than in April, but still at a high level. In May, the average high temperature in Thailand reaches 34℃ (93.2℉), and the low temperature is 25℃ (77℉).
Coolest city of Thailand in May: Chiang Rai 22-33℃ (71.6-91.4℉)
Hottest city of Thailand in May: Kachanaburi 26-36℃ (78.8-96.8℉)
Averages for Thailand Weather in May
High Temperature: 34℃ / 93.2°F
Low Temperature: 25°C / 77°F
Rainfall: 175 mm
Rainy Days: 15 days
Sunrise: 05:49 ~ 05:56
Sunset: 18:34 ~ 18:40
The time for sunrise and sunset are based on Bangkok.
Clothes Suggestion in May
In May, you can wear vacation skirt, flowery shirts, shorts and flip-flops to have a relaxing vacation by the seaside. If you schedule your travel with participating the Vesak Day in 2025 or visiting temples, you need to bring long trousers or long dress with sleeves to show the respect to the Buddhism. Besides the clothes, sunglasses and sunhat are essentials under the burning sun in Thailand.
Best Things To Do in Thailand in May
Seaside Vacation by West Coast or Gulf of Thailand
In May, you could spend your vacation by the West Coast or Gulf of Thailand, where is much sunnier than the East Coast of Thailand. You can enjoy the beautiful tropical beach scenery with green mountains on a horse at Hua Hin Beach. The places like Marukataiyawan Palace on the seaside and Phra Nakhon Khiri Museum on the hills are also characteristic places to visit in Hua Hin.
Meanwhile, Koh Samui is an island not yet influenced by the monsoon in May. There is a large amount of luxury vacation hotels for you to enjoy the slow lifestyle by the seaside. The Full Moon Party on the Ko Pha Ngan Island is a crazy and lively place for you to show your enthusiasm. Ang Thong National Marine Park with 42 small islands and jelly-like sea is a paradise in many tourists’ view. In May, lots of fruits there have grown well. You can enjoy durian, rambutan, longkong fruit, mangosteen and other tropical fruits just by the seaside.
Join in Ceremonies on Vesak Day
Thailand is known as a country with thousands of Buddhas. The Vesak Day (Visakaha Bucha) on May 11th, 2025 is the most important festival among the 48 Buddhism Festivals in Thailand. You can join the ceremony of Vesak Day in the temples like the Wat Phra Kaew, Wat Pho, Wat Arun and so on in Bangkok. The Buddhists in will go to the temples in the early morning to eat foods, give alms to the monks, and listen to the sermons from the eminent monks. The monks will lead the people to bath the Buddha Statue and then hold the candles and flowers walking around the temple to get blessings.
Tip
During Vesak Day and other Buddhism festivals, selling or drinking alcohol is prohibited by Thailand law. Thus during the Buddhism festivals, most of bars will close.
Weather of Major Thailand Destinations in May
Places | Temperature | Rainfall (mm/ days) | Humidity (%) |
---|---|---|---|
Bangkok | 26-34℃ (69.8-93.2℉) | 220/13 | 63 |
Pattaya | 26-32℃ (73.4-89.6℉) | 155/12 | 70 |
Chiang Mai | 24-34℃ (75.2-93.2℉) | 153/15 | 65 |
Phuket | 25-32℃ (75.2-89.6℉) | 270/20 | 76 |
Hua Hin | 26-34℃ (78.8-93.2℉) | 101/12 | 64 |
Koh Samui | 26-33℃ (75.2-91.4℉) | 146/15 | 77 |
Chiang Rai | 22-33℃ (71.6-91.4℉) | 209/18 | 74 |
- Last updated on Jul. 29, 2024 by Gabby Li -