According to a Canadian government information beginning at 12:01 a.m. EDT on September 7, 2021, fully vaccinated foreign nationals will be eligible to enter Canada for discretionary (non-essential) reasons, such as tourism; however, these individuals must:

1. be fully vaccinated: a traveller must have received, and show proof of, the full series of a vaccine — or combination of vaccines — accepted by the Government of Canada at least 14 days prior to entering Canada. Currently, those vaccines are manufactured by Pfizer-BioNTech, Moderna, AstraZeneca/COVISHIELD, and Janssen (Johnson & Johnson). 
2. have a valid pre-arrival COVID-19 molecular test result taken no more than 72 hours before their scheduled flight or their arrival at the land border crossing, or a previous positive test result taken between 14 and 180 days before departure to Canada.  Antigen tests, often called “rapid tests” are not accepted;
3. be asymptomatic;
4. submit their mandatory information via ArriveCAN (App or website), including proof of vaccination in English or French and a quarantine plan;
5. be admissible under the Immigration and Refugee Protection Act; and,
6. take a test on arrival, if selected.

More information at the Governemnt of Canada website here.