H.M. Queen Mother's Birthday Holiday in 2025

When is H.M. Queen Mother's Birthday?

National Holiday in Thailand held annually on August 12th. This holiday marks the birthday of the current queen mother of Thailand, Queen Sirikit.

If August 12th falls on a weekend, the holiday will be observed on the following Monday.

History of H.M. Queen Mother's Birthday

Sirikit was born on August 12th 1932. Sirkit met Rama IX in France in 1946 when he had already become ruler of Thailand. The royal couple were married on April 28th 1950, a week before the King's official coronation.

Sirikit is the mother of Thailand’s reigning monarch, King Vajiralongkorn (or Rama X). The King has been on the throne since the death of his father, King Bhumibol Adulyadej (Rama IX), in 2016.

Across Thailand, buildings are decorated to honour their queen mother, with the most splendid are in Bangkok, where many buildings and streets are festooned with coloured lights, flowers, and portraits of the queen mother.

Thailand’s Queen Mother suffered a stroke in 2012 and has stayed mostly out of the public eye since. The Thai people wear blue throughout the month of August to honour her.

Mother's Day

Mother’s Day was first celebrated in Thailand in April 1950 in a similar fashion to the growing international celebration.

In 1976, the custom of Mother’s Day was changed to August 12th to commemorate the birthday of Her Majesty Queen Sirikit.