The bee inspector will quickly sort out whether you have something more serious than a bad varroa infestation. He she will advise on whatever they find.
I suspect varroa as the usual main problem, but could not be sure from your description and pics.
I do think, however, your hive/colony is in trouble and needs a fix before it collapses completely. An inspection from an experienced beek, such as a bee inspector, will be done and dusted in a very short time-span.
The LBI was checking some colonies in a downpour last week, while he visited me - we had started, so we finished the job. It is not a great problem to him/her or the bees. Standing upwind (or brolly even!).
I suggest you read up all you can about varroa and I hope that is the only problem with your colony.
RAB