If you want to see a lot of rainwear, where do you go? To the opera!!! Quite unexpected!
It is a performance of Wagner's Der Fliegende Holländer from Covent Garden in London that has a lot of rainwear in the first act. 40-50 sailors (the choire) in rubber boots and yellow and orange rainwear, pants and jackets. It's only for about 5 minutes though. Der Holländer himself wears all the time downfolded hip waders.
Here are some pictures:
http://www.artrix.co.uk/TheatreDance/Der-Fliegende-Hollander-The-Flying-Dutchman--Royal-Opera-House-Live-Screening/2495
http://www.bbc.co.uk/programmes/p01vqj0k
http://boulezian.blogspot.se/2015/02/der-fliegende-hollander-royal-opera-5.html
http://www.askonasholt.co.uk/news/peter-rose-and-catherine-wyn-rogers-return-to-the-royal-opera-house-for-der-fliegende-hollander
http://www.opera-online.com/en/items/productions/der-fliegende-hollander-royal-opera-house-covent-garden-2015
A slide show (full screen) here (only a few rainwear pictures). http://www.roh.org.uk/productions/der-fliegende-hollander-by-tim-albery
A trailer with a lot of talk but some pictures: https://www.youtube.com/watch?v=lxmpTc3f_9w
For those of you that like opera, this is a good performance, see it! It was broadcast live all over the world via satellite. I saw it in Stockholm at a cinema theatre 24 February. Check your lokal cinemas (in bigger towns) if it is coming as a rerun. It does in Stockholm. Hurry! You only have one chance at the best.