I can only imagine, doing C2C in bad weather. I've been to the lakes at least 8 times, and only this one was sunny all the time. 8th time lucky! The last time I went, the whole week except the first day was wash off, lower paths were flooded and impassable, higher paths were shrouded in fog and mist. And so, I had a fare share of bad weather.
On the way up to Greenup Edge, I saw several paths and veered off track a bit. If it was wet, as you say, they could be all streams. Because it was clear, I managed to see the fence posts to where we should be heading. Lucky for us, we sat for lunch reaching Greenup Edge and went on to have fantastic views on the ridge walk. Next day, (we divided into 2 days to make it even easier
) as we approached from Grasmere to Grisedale Tarn, the wind picked up and over the Tarn, it was rrrrrreally windy
. I wanted to stop and put more clothes on, but if I stopped, I would have been blown off. I would have liked to go over St Sunday Crag, as I have been to Helvellyn twice already. But it didn't look safe to do so in that wind. I was glad it wasn't raining, or it would have hurt! Same for Kidsty Pike. It was very windy. But as it was clear, I had the last look of the Lakes to say goodby.
Hope the weather improves a bit for you. At least you have 2 companions. Nice thing about C2C is that you keep bumping into same people again and again on the path and at accomo, and built such comradely. Especially, at this time of year, usual tourists may wait until a little later. And waterfalls would look better in the rain