A winter trip to Tawang requires proper cold-weather clothing and practical road-travel essentials. Pack thermal base layers, fleece or woollen mid-layers, an insulated jacket, gloves, a warm cap, thick socks and closed footwear with good grip.
A wind-resistant and water-resistant outer layer is useful for snowfall and exposed high-altitude areas. Sunglasses and sunscreen are also worth carrying because sunlight reflecting from snow can be uncomfortable, while moisturiser and lip balm help with dry, cold conditions.
Keep personal medicines, a small first-aid kit, water and snacks available during long drives. Carry identification, permit documents, some cash and a charged power bank, and keep important documents available offline rather than depending entirely on mobile connectivity.
Altitude needs extra attention around Tawang and on higher excursions. Take the first day at a comfortable pace and avoid strenuous activity immediately after arrival. Bum La and nearby high-altitude areas are considerably higher than Tawang town, so headache, dizziness, nausea or unusual breathlessness should not be ignored.
Move to a lower elevation and seek medical help if altitude symptoms become severe or continue to worsen. Do not continue higher simply to complete a sightseeing plan, particularly if someone develops severe breathlessness at rest, confusion or difficulty walking normally.
For winter road safety, check current weather and access conditions before leaving for Sela, Bum La, PT Tso or Sangetsar Lake. Travel during daylight where possible, use an experienced local driver and follow temporary restrictions after heavy snowfall or icing.
Keep some flexibility in the itinerary and carry an extra warm layer in the vehicle. Snow can make a Tawang winter trip rewarding but less predictable, so being prepared for delayed journeys or cancelled high-altitude excursions is more useful than following a rigid schedule.