When the Canadian Government says "exercise a high degree of caution" it doesn't mean you should avoid that destination or country all-together. It simply means you should be extra vigilant and aware of the specific regions or areas to avoid due to natural disasters, isolated crime, and/or violent incidents.
That said, the Government of Canada is continuously updating the travel advisories list. Check the full list here.
The countries below are some of the more popular destinations that I've picked from the Government of Canada's newly updated list to provide you with info and insights for your fall/winter travels.
1. Israel - Exercise a high degree of caution
This travel advisory was just added today by the Canadian Government. There are certain areas in Israel that have been flagged with the highest degree of caution "avoid all travel" as security situation may change rapidly.
An "exercise high degree of caution" for Costa Rica has been put in effect since mid-September due to "crime." Although about 6-months ago I traveled to Costa Rica with my boyfriend and we had no issues, it's always wise to keep in mind objective danger you could potentially run into during your travels to Central America.
China's status on the travel advisory list was updated mid-September due to Typhoon Mangkhut. Also, the Canadian government warns of isolated acts of violence occurring around the country, including bombings and protests.
5. Saint Lucia - Exercise a high degree of caution
If you are planning an eastern Carribean get-away soon, it might be best to wait until hurricane season is over. The Canadian Government warns to exercise a high degree of caution on the Island of St. Lucia due to limited medical resources, generally poor road conditions, unreliable public transportation, and moderate crime rates.
Jamaica was added in early September due to the high level of violent crime and a state of emergency in one of Jamaica's northern regions. I was sad to hear this because Jamaica is one of my favorite destinations. I've been there twice, and I've never had any issues and always felt safe and welcomed by the warm-hearted locals. However, crime-related violence is a real issue in the country. But as a tourist, if you "exercise a degree of caution" you should be just fine.
Urgent "avoid all travel" advisories are active for certain regions of Thailand due to criminally and politically motivated violent incidents. The rest of the country is on "exercise high degree of caution" due to ongoing tensions and sporadic policial demonstrations throughout the country.