August 1:
- Switzerland's National Day celebrated, also known as Swiss National Day, commemorating the founding of the Swiss Confederation.
August 6:
- Hiroshima Day: Remembrance of the atomic bombing of Hiroshima, Japan in 1945, during World War II.
August 9:
- Nagasaki Day: Remembrance of the atomic bombing of Nagasaki, Japan in 1945, during World War II.
August 11:
- Carnival in Rio de Janeiro, Brazil: One of the world's largest and most famous carnival celebrations, known for its vibrant parades and festivities.
August 15:
- India's Independence Day: Commemorates the country's independence from British rule in 1947.
August 20:
- World Mosquito Day: Observed to raise awareness about mosquito-borne diseases and the importance of mosquito control.
August 21:
- International Day of Remembrance and Tribute to the Victims of Terrorism: Honors the memory of victims of terrorism and promotes solidarity in preventing and combating terrorism.
August 23:
- International Day for the Remembrance of the Slave Trade and its Abolition: Commemorates the transatlantic slave trade and its victims, and promotes the fight against racism, discrimination, and prejudice.
August 24:
- Ukraine's Independence Day: Celebrates the country's independence from the Soviet Union in 1991.
August 30:
- International Day of the Disappeared: Raises awareness about the issue of enforced disappearances and promotes efforts to prevent them and bring justice to victims and their families.