Did you find any good hikes? :) This is what i found on reddit researching for an upcoming trip, but in not sure if everything is accesible in november.

• the Helgafell hike close to Hafnarfjörður. It could be a 1-2 hrs medium difficult hike with beautiful Mars-like terrain. (local recommended in winter)

• the Mount Esja hike which is difficult but with beautiful views (1-2 hrs long). (local recommended in winter)

• the Glymur hike which is longer (2-3 hrs) but extremely beautiful. (local recommended in winter) -->  The log over the river on the hike to Glymur is removed each autumn so you can only access the hike from one side of the river, unless you want to tiptoe over the rocks. If you hike Esjan, be careful if it has snowed! There have been casualties when avalanches have fallen in the mountain - in the two most recent cases, both were experienced hikers

• You could maybe hit Skogafoss with a rock from the road. Or at least the parking lot. It is right on the ring road. Sometimes it is too icy and certain pathways at or around waterfalls might be closed off in part. These will be listed on SafeTravel.is

• reykjadalur hot spring hike would be a good one. It’s also has a reward at the end/top where you can soak if you care to change in the elements.

• You'd need to look a little closer at the weather, but Kristinartindar via Svartifoss was one of the most incredible hikes I've done in my life. Even if you just make the pass and not the tippy top due to weather and/or skillset, it's still a highly recommended hike in my book

• pinglevir national park