Colchester was far more inconvenient to get to than Wrexham to be fair and it wasn't exactly scorching at Layer Road.
FWIW, I thought both of those were great away days and from my own personal perspective the lowest ebb was Lincoln away midweek around October time. I couldn't get away from work early enough to travel on the Leve blues coach so had to make do with the official supporter's club coach from Maine Road. No beer allowed, no banter on the coach, listening to Radio 4, horrendous traffic problems as we approached Lincoln meaning I didn't have time for a single pint when I got there, and to top it all a 2-1 defeat. The epitome of a piss-poor away day.