Hi Michael,
I took a lot of pleasure in reading your blog, reminds me my own trip at the same period.
Think you had a grand car? Here is ours (well, not mine but the one of the touring company...).
And yes, it was rainy and windy. This is two jours after your hiking in Landmannalaugar. Our guide (living since 25 years in Iceland) never saw that much water in some of the places around Landmannalaugar!
As you say in your story, taking pictures in those conditions was a challenge, many landed in the trashbin because of rain droplets on the front lens...
Despite the bad weather, the two weeks spent in Iceland left me with a lot of very nice souvenirs (landscapes, hotsprings...).
Greetings,
Frenchie