Condensation of water on lens and other parts of the camera is a major problems in high humidity areas and seasons. As Yogesh already said, it might not be an issue in Ladakh. But rest of India during monsoons, it would be.
One or two tips for Monsoon travel
1. If you have two rooms and if one is not used for sleeping in, please leave the camera and equipment in that room without AC. Because when you take the camera out of an AC room suddenly to a hot and humid atmosphere, condensation takes place.
2. If there is only one room, as is usually the case in hotel rooms, make it a point to switch off the AC at least two hours before you venture out. By doing so, the camera would have come to near ambient temperature and the condensation would be negligible.
3. If there is a table lamp or bulb conveniently placed, keep the camera near it. Not too close to burn it or damage it, but close enough to be warm and dry.
4. When there is bright sun, expose the lens and camera to it, but taking care the objective lens does not directly face the sun, lest it cause damage to your camera.
5. Always carry a plastic bag in one of the pockets of your camera bag or in the pocket of your cargo. This is apart from the cover that comes with the bag. That cover is for the whole bag. But out in the field, sudden rains can be unpredictable. At such times, the plastic bag comes handy.
