Check the weather in Thailand by city or region to plan your trip. Select Bangkok, Chiang Mai, Phuket, Koh Samui, Pattaya or the main islands to view 7-day forecasts, rain risk, wind, UV index and practical travel tips.
Overcast
Weather data: Open-Meteo
How to use this weather forecast to plan your trip to Thailand
The weather in Thailand can change quickly, especially during the rainy season. A day may start with sunshine, turn into a heavy tropical shower in the late afternoon, and become pleasant again in the evening. The forecasts above are mainly useful for adapting your visits, transfers and activities based on the day’s conditions. For official alerts and radar data, you can also check the Thai Meteorological Department.
On very hot days, plan outdoor visits early in the morning, take breaks in the shade and use air-conditioned places during the hottest hours. If thunderstorms or heavy rain are forecast, keep a light rain jacket in your bag and plan an indoor activity as a backup.
Weather in Thailand by city and region
Thailand does not always have the same weather everywhere at the same time. Northern Thailand, Bangkok, the Andaman coast, the Gulf of Thailand and the eastern islands can experience different conditions depending on the season. To better understand monsoon patterns, read the guide to the rainy season in Thailand.
Bangkok and central Thailand
In Bangkok, Ayutthaya and Kanchanaburi, the heat can be intense between March and May, with temperatures often exceeding 35°C. The wet season usually runs from May to October: showers are often heavy but short, and they frequently occur in the late afternoon. The dry season, from November to February, is often one of the most pleasant periods to visit the region.
Northern Thailand
In Chiang Mai, Chiang Rai and Pai, the cool season, from November to February, brings milder temperatures, sometimes below 20°C at night. The rainy season usually begins in May and ends in October. Between February and April, air quality may deteriorate because of agricultural burning in the region, which is worth considering if you are sensitive to pollution.
Andaman Coast: Phuket, Krabi, Koh Lanta and Khao Lak
The high season on the Andaman coast generally runs from November to April, with less rain and often calmer seas. The southwest monsoon arrives in May and lasts until October: rainfall can be significant and the sea may become rough, which can affect boat crossings. Always check local conditions before taking a sea transfer. If you plan to visit the area, you may also find this Krabi travel guide useful.
Gulf of Thailand: Koh Samui, Koh Phangan and Koh Tao
The Gulf of Thailand follows a different weather pattern from the Andaman coast. Its rainy season is usually most noticeable between October and December. By contrast, July and August, which can be more unstable on the west coast, are often more favorable on the Gulf side, making it an interesting option for traveling to Thailand in summer.
Eastern Thailand: Pattaya, Koh Chang, Koh Kood and Koh Samet
Eastern Thailand has a rainy season from May to October. Koh Chang and Koh Kood can receive heavy rainfall during the low season and are especially popular from November to April. Koh Samet often has a drier climate than nearby islands and is generally accessible year-round for a short beach escape from Bangkok.
What to do if rain is forecast
Rainy weather does not necessarily mean your whole day is lost. In Thailand, tropical showers can be intense but short. You can adapt your plans with temples, covered markets, shopping malls, massages, cooking classes or cafés.
To plan your days despite the showers, read this guide: what to do in Thailand when it rains.
🔄 Last updated on May 9, 2026
