What to wear to Northern Bass: Mangawhai sits at 24°C (75°F) by day and 15°C (59°F) at night in December, on open field, with a moderate chance of rain. That means a light base with one warm layer you can carry, broken-in boots or sturdy trainers, and a bag small enough for the gate rules. The crowd leans rave, party and camping, so anything that survives the day reads as right.








