Bore - surf spot statistics

Best Surf Season (December - February)

The North Atlantic roars to life during the deep winter months, and Bore feels the full force of the Norwegian Sea. With average swell heights climbing to 1.5-1.6m and periods solidly in the 8.3-8.5s range, these months deliver the most consistent and powerful surf of the year. Extratropical cyclones track across the North Atlantic, funnelling a generous mix of WSW to NW swell into the west-facing beach. The challenge lies in the wind: although offshore breezes from the east quadrant are least frequent in absolute terms, they occur more regularly than in summer, with ideal wind conditions 13-15% of the time. When a high-pressure system settles over Scandinavia, pushing clean east winds across the North Sea, the waves clean up dramatically, offering hollow, long-period lines. The NAO index is often positive, steering storms toward Norway – a double-edged sword that can also bring strong onshore winds, but when it aligns, the rewards are epic.

Fair Surf Season (October - November, March)

These shoulder months represent a transitional battle between the dying summer and the awakening winter. October sees average swell heights of 1.3m with periods around 7.5s – still rideable but lacking the punch of midwinter. November and March both average 1.2-1.4m and 8.0s, offering a decent mix of size and power. The dominant swell directions remain favorable, with W and WNW pulses from early-season storms. Wind patterns are fickle: ideal offshore conditions occur roughly 10-13% of the time, often associated with brief ridging from the east. These months require patience and flexibility – you might score a glassy, 2m NW groundswell one day and face onshore slop the next. Overall, they provide a viable window for keen surfers willing to chase the occasional low-pressure exit.

Low Surf Season (April - September)

From April through September, Bore experiences a marked drop in both swell size and quality. Average swell heights hover between 0.7m and 1.0m, with periods dwindling to 6.0-7.5s – often too weak to break cleanly and prone to choppiness. The North Atlantic storm track shifts northward, reducing the frequency of powerful west-quadrant swells. Instead, the dominant swell directions shift toward NW and even N, which can still deliver small peaks but lack the consistency and power of winter. Onshore winds from the west and northwest prevail, and ideal offshore winds are scarce, dropping to just 5-9% of the time. The NAO tends toward a neutral or negative phase, further limiting robust swell generation. This is a season for longboards and grovelers, best suited for beginners or those looking to avoid the crowds – while wave quality is generally low, the occasional summer groundswell can still offer fun-sized nuggets.

September: Autumn’s Reluctant Arrival

September marks a more noticeable uptick in surf quality. Average swell height reaches 1.0m with a period of 7.1s, starting to feel like real waves again. The swell direction spectrum broadens: NW (16.3%), W (13.8%), and WNW (13.8%) still lead, but SW (10.3%) and WSW (10.1%) also contribute, offering a wider variety of angles. A percentage of waves now exceed 1.5m, especially from the WSW-W directions, providing occasional punch. Ideal wind conditions rise to 9%, still low but improving. The wind rose shows NNW (14.2%) as the dominant, but SE (10.9%) and SSE (10.1%) are close behind, offering more offshore opportunities. The NAO index often becomes more negative, allowing east winds to set in under blocking highs. September can surprise with clean, fun-sized waves – not yet consistent, but the gears are turning toward winter.