I finally started Dragonborn DLC. I traveled by boat from Windhelm to Solstheim. When I landed there, the weather was very gloomy but sun-rich.
Blood-cursed arrows fired at the sun do not work at blocking out the sun fired from Auriel's bow. In Skyrim they create a marvelous sun-block where vampires can flourish. But in Solstheim, Auriel's bow refuses to work.
I also tried the Clear Skies shout to see if it works. It does not work.
What can I do except for burn in the sun?