condensation inside of samsung camera in humid weather

[glady walia 0]

I have installed 5 of

Samsung SCO-2080R which is Indoor/Outdoor High Resolution Weatherproof Camera IP 66 - IR,

and place it outdoor & these days the weather is humid & rainy. However two of them are giving condensation on inside cover of camera

,when we clean it ,again the moisture develops thus giving a cloudy view sometimes within 30 minutes.pls suggest how to resolve