Great websites
I couldn't find a thread for this already, so figured I'd start it.
Just saw this website on FB and thought this would be a great resource for our UK-based or UK-destined OW swimmers. At this site you can check surface water temp at a few of the big lakes in the UK.
We're all just carbon, water, starlight, oxygen and dreams
Comments
For irish ocean temps - now these are a good bit out to sea so allow for local variations
http://www.met.ie/latest/buoy.asp
For weather long term
http://magicseaweed.com/
Short term
http://www.yr.no/kart/#lat=51.58194&lon=-8.83306&zoom=6&laga=bølgje&baseid=PunktUtlandet:2965401&proj=3575
Ocean Temperatures
USGS River Flow Data (some places include temperature, as well)
Personally, my favourite is http://www.marathonswimmers.org . ;-)
http://www.allanmcgavinphysio.com/wp-content/uploads/2014/10/Swimmers-Exercise-Program.pdf
This is a "Swimmers’ Scapular Re-Education Program", which I believe has been designed by the physiotherapist for Canada's national swim team. (He's not listed as the author on the page, but he appears in the photos, and prescribes these exercises.)