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.

August: A Glimmer of Recovery

August shows the first signs of recovery as the North Atlantic begins to stir. Average swell height ticks up to 0.8m with a period of 6.3s – still small, but the slight increase in period hints at more organised swell. NW (20.5%) and WNW (15.3%) remain dominant, but the west (12.8%) and WSW (10.9%) directions also contribute, bringing a slightly more varied mix. Ideal wind conditions improve marginally to 6%. The wind rose still favours NNW (20.3%) and NW (11.6%), but there is a notable presence of SE (8.3%) and SSE (9.2%) – offshore directions that can occasionally align with the swell. While the majority of days remain poor, the chances of a fun-sized session increase compared to June and July. It’s a transitional month where early autumn storms start to send longer-period pulses toward Norway, and with patience, you might score a rideable day.