Events

• February - During Operation Coldstore
  Operation Coldstore
  Operation Coldstore was a security operation launched in Singapore on 2 February 1963 in which at least 111 anti-government left-wing activists were arrested and detained, including key members of the opposition political party Barisan Sosialis...
  
  , 107 left-wing politicians and trade unionists are arrested by Internal Security Department
  Internal Security Department
  The Internal Security Department is a domestic intelligence agency of the Ministry of Home Affairs of Singapore. It was formerly part of the Ministry of Interior and Defence until it was split on 11 August 1970...
  
  
• 9 July - The Malaysia Agreement is signed between leaders of Malaya, Singapore, Sabah
  Sabah
  Sabah is one of 13 member states of Malaysia. It is located on the northern portion of the island of Borneo. It is the second largest state in the country after Sarawak, which it borders on its southwest. It also shares a border with the province of East Kalimantan of Indonesia in the south...
  
   and Sarawak
  Sarawak
  Sarawak is one of two Malaysian states on the island of Borneo. Known as Bumi Kenyalang , Sarawak is situated on the north-west of the island. It is the largest state in Malaysia followed by Sabah, the second largest state located to the North- East.The administrative capital is Kuching, which...
  
  .
• 12 July - The Pulau Senang prison riots breaks out, with four prison officers killed by rioting prisoners. The unprecedently large court proceedings which followed sentenced 18 to death.
• 31 August - On this Malaysia Solidarity Day, Lee Kuan Yew
  Lee Kuan Yew
  Lee Kuan Yew, GCMG, CH is a Singaporean statesman. He was the first Prime Minister of the Republic of Singapore, governing for three decades...
  
   declares the Independence for Singapore from the British
  United Kingdom
  The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...
  
  .
• 16 September—Malaysia is formed. Indonesia
  Indonesia
  Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
  
   carries out its konfrontasi campaign.
• 21 September - The PAP wins the 1963 State Elections, defeating the Barisan Sosialis
  Barisan Sosialis
  The Barisan Sosialis is a former Singaporean left-wing political party formed in 1961, by left-wing members of the People's Action Party and led by Dr Lee Siew Choh and Lim Chin Siong.-Formation:...
  
   and UMNO.

1963 Malaysian and Singaporean events by month