During my first trip to Spain, I was there during the World Cup. Spain in general is obsessed with soccer. Every sports magazine has at least one soccer player on the cover, and soccer games are often playing on tv or on the radio.
I remember on the bus coming back from Barcelona, they had the World Cup on the radio and Spain's team was playing at the time. Every time the announcer would say "Gol!" the whole bus would cheer!
Apparently cycling is very popular in Salamanca. I remember during my first trip (June 2002), at one point some of the roads were blocked off for a bicycle race or something like that. My host father often went out biking in the afternoons too.
There aren't any beaches, but there are a few outdoor swimming pools in Salamanca. Very useful if you find the weather too hot! They're in an enclosed space, and the one I went to also has an area where you can sit down in the grass and relax.
Equipment: Your swimsuit, towel, and pool/beach sandals. If you don't have these things, there are many stores in town where you can buy them.