Temperatures in Bhutan vary according to weather, altitude, & time of the day. Carry all types of clothes. Except if you’re traveling to Bhutan during the summers, it’s advisable to carry warm clothes. Some of the items that you may consider carrying include :clothes as per season, sunglasses / spare glasses, pair of casual shoes, hat, umbrella, camera, films and accessories, insect repellent, hand cream, torch or flash light with spare batteries, mirror, scissor, sun cream, lip salve or soluble aspirin, antiseptic cream,  anti-diarrhea pills, etc.