Super lightweight jersey

[djg21]

Gore makes a collection of summer-weight jerseys. I have one I wear when it's close to 90 degrees or above.

[rnhood]

Originally Posted by Miller76

Does anyone wear a base layer under their jersey in the summer?

You stay cooler by not wearing one however, let comfort be your guide. Like many things in cycling, preference plays a role.

[dbnm]

I always wear a Rapha or Craft mesh base layer. I think it helps in keeping me cooler.