Currency
The Indian rupee. Gangtok has ATMs and takes cards, but carry cash for North Sikkim, Lachung, Lachen and village homestays where machines are scarce.
Language
Nepali is the common language, with Bhutia, Lepcha and Bengali also heard. Hindi and English are widely spoken and cause no difficulty.
Time difference
India uses one national time zone, so no clock change is required. Daylight hours vary by season and longitude.
Weather
Clear cold winters with snow at altitude, a rhododendron spring, a heavy monsoon from June to September carrying landslide risk, and a bright stable autumn.
Connectivity
Reliable in Gangtok and the larger towns. North Sikkim, Zuluk and the high passes have patchy or no signal, so download maps and bookings beforehand.
Food & culture
Sikkimese comfort food includes momos, thukpa, phagshapa, fermented gundruk and sinki, bamboo shoot, churpi and millet-based tongba. Nepali, Bhutia and Lepcha communities share the state. Buddhist monasteries, prayer flags and Cham dances are central cultural markers, and local vegetables are seasonal and organically farmed.