Rosie's Bay - surf spot statistics

Rosie’s Bay in Canada offers surfers a mix of swell and wind conditions throughout the year, with distinct seasonal patterns. The best months for surfing are typically from late autumn through early spring, particularly December, January, and February. During these months, ground swell dominates (87%), providing the most consistent and powerful waves, averaging 1.8 to 2.0 meters in size. While wind conditions are less favorable (only 33-35% of days have good winds), the strong ground swells compensate, making these months prime for experienced surfers who can handle challenging cross-shore or onshore winds. March and November are also solid, with decent ground swell presence (75-77%) and similar wave heights (1.7-1.8m), though wind quality remains inconsistent. From April onward, conditions gradually decline. Spring and summer (May to August) see weaker swells (0.9-1.4m), a higher proportion of wind swells, and fewer clean wind days (20-25%). Surfable waves still occur, but they’re smaller and less reliable. September and October mark a return to better ground swell influence (56-69%) and slightly improved wind conditions (34-36%), though wave size remains moderate (1.1-1.5m). In summary, the peak season is winter, with December to February offering the biggest and most consistent waves, while shoulder months like September-November and March-April provide decent alternatives before the summer lull.

September at Rosie's Bay offers fairly consistent surf conditions, with an average swell height of 1.1m and a solid 12.0s period, ensuring clean, well-spaced waves. The primary swell direction is WSW to W, contributing the majority of rideable waves—particularly in the 0.5-2.5m range, with WSW swells (11.91% at 1-1.5m) and W swells (10.15% at 1-1.5m) being dominant. These directions align well with the spot’s orientation, providing good shape and power. Wind conditions are favorable 36% of the time, typically light (0-20kph) from the W to NW, which can groom waves without blowing them out. However, stronger winds (20-30kph) from W/NW occasionally occur but are less frequent. Overall, September delivers a mix of mid-sized, clean swells suitable for intermediate to advanced surfers, with windows of excellent conditions when winds cooperate.