Mangamanu - surf spot statistics

Mangamanu in New Zealand offers surfable conditions year-round, with seasonal variations in swell quality and wind patterns. The best months for surfing are typically from March to August, when ground swells dominate (51% to 59%) and mean swell sizes range from 1.5m to 1.7m. During this period, ground swell consistency peaks, particularly in May (59%) with June and July delivering the largest waves (1.7m). Wind conditions improve slightly in the autumn and winter months (May to July), with good wind days averaging 34%, still outnumbered by poor winds but less severe than summer. The summer months (December to February) see a higher proportion of wind swells (58% to 69%) and smaller waves (1.2m to 1.4m), paired with the worst wind conditions (72% to 73% unfavorable). September marks a transition, with ground swells dropping below 50% but still offering decent wave heights (1.5m). While surfable, the shoulder seasons (September to November and late summer) present more mixed conditions, with weaker ground swells and persistent onshore winds. For the most consistent and powerful waves, target the mid-autumn to mid-winter window when ground swells are strongest and winds are marginally less disruptive.

July at Mangamanu offers decent surf conditions with an average swell height of 1.7m and a solid period of 10.6s, ensuring well-formed waves. The swell distribution is strongest from the S/SSE/SE directions, delivering the most consistent and surfable waves in the 1–2.5m range (with occasional larger sets). These southerly swells provide the best shape and power, making up the majority of rideable conditions. Wind conditions are variable, with offshore or light winds favorable for surfing only 34% of the time. The dominant winds come from the N/NW/WNW, which can create onshore chop or cross-shore disruptions, particularly at higher speeds (20–50kph). However, when winds align from the E/ENE, they tend to be lighter and more favorable. Overall, July is a solid month for experienced surfers, with the best sessions occurring during southerly swells paired with lighter easterly winds—expect consistent, mid-sized waves but be prepared for less-than-ideal wind on many days.