Actor Christian Bale is dreading filming the sequel to Batman Begins this summer - because he knows hot weather and rubber suits are a bad combination.

Bale has already begun shooting The Dark Knight with director Christopher Nolan, but with filming scheduled to run over the next few months, the 33-year-old will have to endure long hours dressed up in his fitted suit to play Bruce Wayne's alter-ego, Batman.

He says, "I'm not really looking forward to wearing a black rubber suit in the summertime in humid Chicago. If you see a pool of sweat through the city, follow it and you will find me."

Luckily for Bale however, Nolan prefers to film after the sun goes down.

Bale adds, "We tend to shoot at night like some kind of covert operation. So, we have minimal people actually seeing me in that way."