There are good things and bad things about cycling in Cambridge.
Good things include how many other cyclists there are, how many places there are to lock bikes, and how aware most regular drivers here are that there are a lot of bikes.
Bad things... Well, imagine you're a cretin, and you're a motorist. Imagine that you've just spend two hours on the car park known as the A14, you come off to go down either Histon, Milton or Arbury road, and you see a cyclist in the gutter... Then another in the gutter, and then another 10, and then one in the middle of the lane riding appropriately and assertively. Remember, you're a cretin. How do you act?
I've never known any place where I've encountered a greater number of really angry motorists. They get het up because they've struggled to get through the city centre ("but this road is designed such that cyclists slow the traffic down" does not appease them when you've slowed them down, as you're meant to...). They're angry because the roads are narrow and Cambridge is massively busy. They're just angry. And its remarkable really, I mean by continental standards Cambridge isn't THAT unusual, its just that your British motorist doesn't take well to this volume of cyclists.
You get less cyclists in winter, but the pattern of cycling congestion isn't as simple as that. We're at a peak time now; all the foreign kids who come to Cambridge for summer school just hit town, the roads are crammed full of teens from abroad who don't quite get what they're meant to do on these hire bikes. Then of course when the students first come back proper, and when the sun shines... But still, in driving rain, hail or snow, you'll see cyclists out in this city, and plenty of them.