He said the government has prepared tourism measures for the Songkran festival to attract more domestic and international tourists and increase purchasing power.

Source: https://www.pattayamail.com/thailandnews/thailands-tourism-sector-construction-real-estate-restaurant-businesses-see-continuous-recovery-428968

Songkran marks the end of the dry season and the start of the monsoon rains, assuming they come.

Source: https://www.chiangraitimes.com/health/temperatures-during-songkran/

Thai New Year water festival, known as Songkran, is celebrated in Pattaya from April 13 to April 15. Instead of trying to out-celebrate other national holidays, they do this to draw more tourists.

Source: https://www.chiangraitimes.com/news/songkran-return-to-pattaya/