Bhutan maintains a controlled tourism policy requiring all independent travelers to book through licensed tour operators and pay a Sustainable Development Fee of USD 100 per night. This fee replaced the previous USD 200-250 daily minimum package rate in September 2022. The SDF covers visa processing but not accommodation, meals, guides, or transport, which tour operators price separately. Regional tourists from India, Bangladesh, and Maldives pay reduced rates of INR 1,200 per night but still require operator bookings. The only international airport sits in Paro Valley at 2,235 meters elevation. Drukair and Bhutan Airlines fly from Bangkok, Delhi, Kolkata, Kathmandu, Singapore, and several other Asian cities. Flights approach through narrow valleys between peaks exceeding 5,000 meters, with landings permitted only during daylight in clear conditions. The alternative entry crosses land borders at Phuentsholing in the southwest or Samdrup Jongkhar in the southeast, both connecting to Indian towns with rail and air links.
Roads connect the western valleys through the Lateral Road, which runs approximately 450 kilometers from Phuentsholing to Trashigang but remains unpaved in sections east of Trongsa. The government completed paving through Dochula Pass to Punakha in 2008. Road quality deteriorates during monsoon months from June through August when landslides close sections for hours or days. No railways operate within Bhutan. Tour operators provide vehicles with drivers as independent car rental does not exist for tourists. The drive from Paro to Thimphu takes one hour on paved road covering 54 kilometers. Paro to Punakha requires three hours including the climb to Dochula Pass. Thimphu to Bumthang takes seven to eight hours covering approximately 215 kilometers. Taxis operate in Thimphu and Paro on meter systems starting at BTN 30, though most journeys within towns cost BTN 100 to 150. Domestic flights connect Paro with Bumthang, Gelephu, and Yonphula near Trashigang through irregular scheduling dependent on weather.
The climate divides into southern subtropical zones below 2,000 meters, temperate central valleys between 2,000 and 3,000 meters, and alpine conditions above 3,000 meters. Thimphu sits at 2,320 meters and experiences January lows averaging minus 2 Celsius with highs of 12 Celsius. July brings lows of 15 Celsius and highs of 25 Celsius. Paro Valley sits slightly lower at 2,200 meters with similar temperature patterns. Punakha Valley at 1,200 meters records warmer conditions with winter lows of 4 Celsius and summer highs reaching 30 Celsius. The monsoon arrives in mid-June and continues through August, delivering approximately 75 percent of annual rainfall. Thimphu receives around 650 millimeters annually while southern valleys receive 5,000 millimeters. September through November provides clear skies with daytime temperatures of 15 to 20 Celsius in central valleys and visibility extending to distant Himalayan peaks. March through May offers similar conditions with rhododendron blooms at mid-elevations but occasional afternoon clouds. December through February brings cold dry conditions with snow closing Dochula Pass and higher roads for days at a time.
Festival dates follow the lunar calendar. Paro Tshechu occurs in March or April and draws the largest tourist attendance. Thimphu Tshechu falls in September or October. Punakha Drubchen and Tshechu take place in February or March. Black-necked cranes arrive in Phobjikha Valley in late October and depart by mid-March, with peak numbers in December. Booking for festival periods requires three to six months advance notice as licensed operators reach capacity. The government limits daily tourist arrivals through the requirement that all visitors pay the SDF regardless of activity level, effectively creating scarcity in popular periods. Shoulder seasons of March through May and September through November offer full access to sites with moderate booking pressure. The monsoon months see reduced international visitors but maintain domestic tourism and pilgrimage traffic.