In general, it rains more in September.
Nature is more splendid and the landscape of the rice fields is very beautiful. The environment in activities such as hiking, cycling, whitewater rafting, the zip line and the visit to the elephant camp will have a special brightness.
Remember to bring more spare clothing and appropriate footwear, and it is advisable that at least one pair is adequate to get wet and even to enter the water if you walk through walking trails.
Carry airtight bags with you to store dry valuable objects, documents and even spare clothing during excursions and transfers.
In Bangkok, there are intense storms of a couple of hours in which necessarily you have to take refuge until the sky clears. They are more frequent at sunset.
If the forecast is heavy rains, you can take the opportunity to sign up for a Thai cooking course or focus on the places of interest of the town you are visiting.
During your stay at the beaches, some luck is needed, more if you choose the Andaman sea. If it is an island, you must pay special attention to the weather forecast for the day in which you must take the maritime link for the return to the continent.
It’s a good idea to have the best attitude, well, be happy whether you’re lucky or not, in this case just adapt to it.
On the other hand, in the low season, there is a wide availability of accommodation and at a better price, as well as less concurrence of travelers, which is undoubtedly an advantage.