Marlborough Wine Region in May

December through April delivers perfect weather — warm days, cool evenings, and harvest season energy. January and February see the busiest crowds but also the most events, including harvest festivals at various wineries. March offers the sweet spot: fewer tourists, perfect temperatures, and autumn colors painting the vineyards. December kicks off summer with long daylight hours ideal for cycling between cellar doors. April brings harvest time, when you can watch grape picking and crushing in action. Winter months from June to August offer cozy cellar door experiences and lower accommodation prices, but some smaller wineries reduce their hours. Spring (September to November) sees vineyards budding with new growth, though weather can be unpredictable. Book accommodation well ahead for December and January — the region fills with wine tourists and summer holidaymakers.