Wainui Beach - surf spot statistics

Wainui Beach in New Zealand offers consistent surf conditions year-round, with some months standing out as particularly favorable for surfers. The best time to surf here is generally from March to August, when ground swell dominates, wave heights are more substantial, and wind conditions, while still often challenging, show slight improvements compared to the rest of the year. March marks the beginning of the better swell season, with ground swell contributing 51% of the waves and an average swell size of 2.0 meters. This trend continues into April, May, and June, with ground swell peaking at 59% in May, accompanied by the year's highest mean swell size of 2.4 meters in June and July. Wind conditions remain predominantly unfavorable throughout the year, with good wind days hovering around 19-24%, but the slightly higher percentages in autumn and winter (April to August) provide marginally better opportunities. The worst months for surfing are typically November through February, when wind swell dominates (60-66%), ground swell drops significantly (33-42%), and wind conditions are at their poorest (only 19% good wind days). Despite these challenges, Wainui Beach rarely experiences flat spells, with virtually no days without swell. For surfers seeking quality waves, the autumn and winter months (March to August) are the prime window, offering larger, cleaner swells and slightly more manageable winds compared to the summer period.

December at Wainui Beach offers decent surf conditions with an average swell height of 1.7m and a solid period of 9.7s, providing well-formed waves. The majority of swells come from the northeast to southeast, with the most consistent wave heights (1-2.5m) arriving from the ENE to SSE directions, making for rideable waves with good energy. The SSW and S swells also bring larger sets (1.5-2.5m+), which can be powerful and ideal for experienced surfers. However, smaller or less consistent swells from the west and northwest are minimal. Wind conditions are variable, with only 19% of the time being ideal for surfing—typically when winds are light offshore or sideshore from the northeast to southeast. Stronger winds from the north, northwest, or southwest can create choppy or blown-out conditions, particularly in the afternoons. Overall, December delivers a mix of rideable days, best in the mornings with favorable wind/swell alignment, though clean conditions are not guaranteed due to the relatively low percentage of optimal winds.