All photos on this post has been taken on my trip in 2019 to Monet's house in Giverny and Honfleur. Giverny is just 1.5 hour drive from Paris and autumn was great to visit because weather was comfortable to walk around and wasn't not too crowded.
Here are some photos from Honfleur and Étretat (where Monet painted Les Falaises à Étretat series)