From Auckland into the Waikato and Waitomo hills, weather can swing quickly between bright breaks and passing showers, so timing often hinges on shorter rain sequences and quicker‑drying clay tracks. February, April, and October align with the more workable windows. Late summer tends to bring steadier walking and long daylight, early autumn adds crisp mornings and calmer spells, and spring lifts temperatures while remaining lively and occasionally muddy.