Motunau Beach Island - surf spot statistics

Motunau Beach Island in New Zealand offers a mix of ground and wind swells throughout the year, with no months entirely devoid of swell. The best conditions for surfing generally occur between April and August, when ground swell dominance increases, averaging 54-58% of the swell mix, resulting in cleaner, more organized waves. During these months, mean swell sizes peak at 1.7-1.9m, providing solid surfable conditions. Wind conditions improve slightly in this period, with good wind days ranging from 28-32%, though onshore winds still dominate. Winter months (June-August) offer the most consistent swell but come with higher wind variability. The summer months (December-February) see a higher proportion of wind swells (61-72%), which can lead to choppier conditions, compounded by less favorable wind patterns (only 20-21% good wind days). For surfers seeking quality waves, the autumn and winter transition (April-July) stands out as the prime window, balancing decent swell size, cleaner ground swells, and marginally better wind odds compared to the rest of the year. However, even in the best months, surfers should expect challenging wind conditions frequently.

June at Motunau Beach offers decent surf conditions with an average swell height of 1.9m and a solid 10.8s period, indicating good energy in the waves. The swell is predominantly southerly (S to SSE), providing the cleanest and most consistent waves, with higher percentages in the 1-2.5m range—ideal for intermediate to advanced surfers. Cross-shore or offshore winds (ESE to E) occur 31% of the time, enhancing wave quality. However, strong SW to W winds are frequent (20-30kph+), often creating chop or unfavorable conditions. Winter swells from the south are powerful but inconsistent, with smaller ENE-NE wind swells adding variety. Wind management is key; aim for lighter ESE-E or calm days for the best sessions. Overall, June delivers rideable waves, but selectivity with wind and swell direction is crucial for optimal surfing.