The best time to visit Bang Pa In Palace is during the cool and dry season, which typically runs from November to February. During this time, the weather is pleasant with lower humidity and temperatures ranging from 20-30°C (68-86°F), making it a comfortable time to explore the palace complex and its gardens.
Visiting the palace during this season also offers the opportunity to witness some of the palace's annual festivals and events, such as the Bangsai Arts and Crafts Fair and the Thai New Year celebrations.
However, it's important to note that as a popular tourist destination, the palace can be crowded during peak season. If you prefer fewer crowds, consider visiting during the shoulder season months of March-April or September-October. Just keep in mind that the weather may be warmer and more humid during these times.
On the other hand, it's best to avoid visiting Bang Pa In Palace during the rainy season, which runs from May to October, as the palace complex and its gardens may become muddy and slippery, and there is a higher chance of rain and thunderstorms.
