Heating and Staying Warm
Diesel heaters are efficient and common in NZ campervans; they draw from the vehicle’s diesel tank or a separate small tank. Gas heaters need good ventilation and a CO alarm — never use a cooker for heating only. Insulation and thermal curtains help. Expect cold nights in the South Island and inland; a good sleeping bag or duvet is essential. See living in a campervan for power and cooking.
Condensation
Winter increases condensation inside the van. Ventilate (roof vents, cracked windows), use a dehumidifier or moisture traps, dry wet gear outside, and cook with lids on. Wiping down windows and walls in the morning helps prevent mould. Good airflow is more important than sealing everything shut.
Roads and Snow
Some alpine passes (e.g. Desert Road, Lewis Pass, Crown Range, Lindis) can have ice and snow in winter. Snow chains may be required in designated areas — carry them and know how to fit them. Check NZTA Journey and weather before crossing passes. Drive to conditions; allow extra time. Frost and black ice are common at dawn in cold areas.
Where to Camp in Winter
Freedom camping is still allowed where councils permit it; some high-altitude or closed roads limit access. DOC campsites and holiday parks are reliable — many have powered sites and shelter. Shorter days mean less driving time; plan stops earlier. Use CamperMate or Rankers and regional freedom camping guides to confirm sites are open and accessible.