Hi Vina,
Many thanks for your message!
September is a great time to visit Canada. The weather is comfortable and the fall foliage is spectacular. June to September is the summer season with clear, sunny, warm days, but the nights are still cool. The weather can be a little unpredictable and can change from sunshine to rain to strong winds all in one day, so be prepared! I'd reccommend layers, and maybe pack a waterproof jacket just in case!
The west coast of America does have great weather in September. Fall in San Francisco is truly the best time of year for weather. Days are warm and sunny, sometimes blisteringly so, and nights are mild and clear. Los Angeles experiences clear days and little fog in September and again, is one of the best times of year to visit the city.
Hope this helps and you decide to book - both tours look fantastic and i'm sure you'll have a great time!
Warm regards,
Cheryl, your editor