Amritsar gets really hot during the summer period that is from April to September. This is the time, when light cotton outfits are advisable. Always carry packaged water and a bottle of juice during the summer.
This will avoid dehydration during hot sunny days. Sun- screen lotion is a must during this period. On the other hand, November to Marchis the winter season, so, carry warm clothes.
Also carry some medicines, in case if you catch a cold. July and August are the months when monsoon is at its peak. This is a beautiful season to visit Amritsar. However, it is a favorable season for mosquitoes as well.
Carry a mosquito repellent in this season. Some of the hotels or lodges may not have toilet papers. Hence, carrying some extra bundles of toilet papers may come handy.